Compare the net force on a heavy trunk when it’s (a) at rest on the floor; (b) being slid across the floor at constant speed; (c) being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk; and (d) sliding down a frictionless ramp.

Question

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Answer 1

Textbook Question

Chapter 5, Problem 1FTD

Compare the net force on a heavy trunk when it’s (a) at rest on the floor; (b) being slid across the floor at constant speed; (c) being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk; and (d) sliding down a frictionless ramp.

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

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Answer 2

Textbook Question

Chapter 5, Problem 1FTD

Compare the net force on a heavy trunk when it’s (a) at rest on the floor; (b) being slid across the floor at constant speed; (c) being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk; and (d) sliding down a frictionless ramp.

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

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Answer 3

Textbook Question

Chapter 5, Problem 1FTD

Compare the net force on a heavy trunk when it’s (a) at rest on the floor; (b) being slid across the floor at constant speed; (c) being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk; and (d) sliding down a frictionless ramp.

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

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Answer 4

Textbook Question

Chapter 5, Problem 1FTD

Compare the net force on a heavy trunk when it’s (a) at rest on the floor; (b) being slid across the floor at constant speed; (c) being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk; and (d) sliding down a frictionless ramp.

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Answer 8

(a)

Expert Solution

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

Answer 9

(a)

Expert Solution

Answer 10

(a)

Expert Solution

Answer 11

Expert Solution

Answer 12

To determine

The net force on a heavy trunk when it is at rest on the floor.

Answer 13

Answer to Problem 1FTD

The net force on a heavy trunk when it is at rest on the floor is zero.

Answer 14

Explanation of Solution

According to Newton’s first law of motion a body will remain in rest until it is acted upon by external unbalanced force. Therefore the net force acting on a body at rest is zero.

The forces acting on a body are weight of the body which is down ward and normal reaction which is upward. For a body at rest on the floor therefore the normal reaction will be equal to that of weight of the body. Thus net force will be zero.

Conclusion:

Thus, the net force on a heavy trunk when it is at rest on the floor is zero.

Answer 15

(b)

Expert Solution

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Answer 16

(b)

Expert Solution

Answer 17

(b)

Expert Solution

Answer 18

Expert Solution

Answer 19

To determine

The net force on a heavy trunk when it is being slid across the floor at constant speed.

Answer 20

Answer to Problem 1FTD

The net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Answer 21

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force. Therefore the net force acting on a body in uniform motion is zero.

The forces acting on the trunk are the weight of the trunk which is acting downward and normal reaction which is acting upward, driving force along the direction of motion, air resistance opposite to the direction of force and friction opposite to the direction of motion. The normal reaction balances weight of the trunk and driving force balances the sum of air resistance and friction. Thus net force acting on a constant speed car is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being slid across the floor at constant speed is zero.

Answer 22

(c)

Expert Solution

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

Answer 23

(c)

Expert Solution

Answer 24

(c)

Expert Solution

Answer 25

Expert Solution

Answer 26

To determine

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk.

Answer 27

Answer to Problem 1FTD

The net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero.

Answer 28

Explanation of Solution

According to Newton’s first law of motion a body will remain in uniform motion until it is acted upon by external unbalanced force.

The forces acting on the elevator and trunk is the weight of the body acting downward and tension of the cable acting upward. Since both are same net force acting on the system is zero. Thus total acceleration is zero. Therefore net force on elevator and trunk is zero.

Conclusion:

Thus, the net force on a heavy trunk when it is being pulled upward in an elevator whose cable tension equals the combined weight of the elevator and trunk is zero

Answer 29

(d)

Expert Solution

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Answer 30

(d)

Expert Solution

Answer 31

(d)

Expert Solution

Answer 32

Expert Solution

Answer 33

To determine

The net force on a heavy trunk when it is sliding down a frictionless ramp.

Answer 34

Answer to Problem 1FTD

The net force on a heavy trunk when it is sliding down a frictionless ramp is downward.

Answer 35

Explanation of Solution

According to Newton’s first law of motion a body will move with acceleration only if there is any net force acting on it.

The trunk sliding down is similar to free fall. The only force is the weight of the body which is downward. Therefore net force on the trunk is downward.

Conclusion:

Thus, the net force on a heavy trunk when it is sliding down a frictionless ramp is downward.