An elevator is moving upward at a constant speed, pulled by the cable it is attached to. What forces are acting on the elevator?  The weight, the force of gravity, and the tension  The weight and the tension force  The weight, the normal force, and the tension force  The weight and the normal force  Only the weight

Q: A 13.5 lb box is placed on the ground. (a)What force (in lb) does the ground exert on the box?…

A: Given, Weight of the block placed on the ground, W = 13.5 lb

Q: A magnet of mass 4.04 kg is suspended from the ceiling by a cord as shown. A large magnet is…

A: Draw the free-body diagram of the system. The resultant force of the weight of magnet and constant…

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.9 m/s2. (a) If…

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Q: You are pulling your luggage at an air port for an international flight. You know not to pack too…

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Q: The table below represents the data found by dragging solid brass weights across a desk with a…

A: For N = 4.1 and f = 1.0 f = µN 1.0 = µ*4.1 µ = 1/41   For the given µ, and f = 2 N f = µN = µmg 2 =…

Q: A person is pushing a box across a floor. Can the frictional force on the box ever exceed its own…

A: Given: A question and asked to reason it suitably. A person is pushing a box across a floor. Can the…

Q: The unit of drag coefficient depends on the dimensions of the falling object O True False

A: To determine: The correct option.

Q: An elevator cab and its load have a combined mass of 7.8 kg. When the cab, originally moving…

A: Given: Combined mass of elevator and load m = 7.8 kg. Original speed of elevator v = 7.3 m/s.…

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.7 m/s2. (a) If…

A: Part (a) Given: The tension in the string is 97 N. The elevator is descending with deacceleration is…

Q: Two persons are pulling the ends of a string in such a way that the string is stretched…

A: The persons cannot make it horizontal again by pulling it with a greater force because the vertical…

Q: A force of 50 N acts to the right on a box and a force of 20 N acts to the left on the box. The net…

A: 50 N force acts to the right on a box 20 N force acts to the left on a box

Q: A 10 kg is suspended vertically in a cord. What is the tension in the cord?

A: let us find the tension of the cord of 10 kg suspended vertically in the cord.

Q: 100-kg box is suspended from two ropes; the left one makes an angle of 20 0 with vertical, and the…

A: Given: The mass of the object is 100 kg. The angle made by the first rope is 20o with vertical. The…

Q: A mass of 3.38 kg is on a horizontal surface. An applied force of 22.6 N at an angle of -28.2…

A: Given: m=3.38 kg F=22.6N θ=-28.2° negative sign means angle is below horizontal

Q: A box is being pushed across a horizontal floor. If the net force (Fnet) is 1000 N and the box…

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Q: Zlatina is using a rope and pulley to suspend a mass of 15 kg. She uses a scale to measure the…

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Q: A man whirls a 0.30-kg plece of lead attached to the end of a string of length 0.460 m in a circular…

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Q: A box 'A' rests on a table. A rope tied to the box runs vertically upwards over a pulley and a…

A: Weight of mass: W1 = 80 N Normal force on Box A: N = 15 N

Q: Is it possible for an object to achieve equilibrium when there is only one force acting on it? No,…

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Q: A 10 kg is suspended vertically in a cord. What is the tension in the cord? *

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Q: A box filled with appliances rests on a floor. Only gravity and the support force of the floor act…

A: Given, A box rests o floor (a=0) Pull Force , P acts on it not enough to move Let f be frictional…

Q: Two ropes are supporting a slab of wood. If another weight is put on the slab in between the two…

A: Correct option is (d) The tension on one of the ropes is half of the object 's weight.

Q: A 1070-kg car is being pulled up a frictionless ramp at a constant speed, as shown in the figure.…

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Q: Which of the following is correct? The angle of friction is equal to depression angle at impending…

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Q: A box is sliding across a rough horizontal floor while Mary exerts a force on it. The magnitude of…

A: Friction Force: A kinetic friction force on a body only acts when a body is moving. The kinetic…

Q: A 107 kg crate is sitting at the top of a ramp, which is inclined at an angle of 30 degrees with…

A: Mass of the crate is m = 107 kg Angle of inclination of ramp is 30 degrees

Q: Which of the following is correct? The angle of friction is equal to depression angle at impending…

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Q: A 74.2 kg person is standing inside an elevator. The elevator is moving upward at 2.98 m/s and is…

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Q: An object of mass is in equilibrium with the aid of a horizontal force of 44 N, as shown in the…

A: Given data: F=44N theta=39o To find: Weight of object

Q: In all three cases, A, B, and C, the crate is in equilibrium (no acceleration). From greatest to…

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Q: A 23.4 kg box rests on an inclined plane creating an angle of 34.5° from the horizontal. What is the…

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Q: As part (a) of the drawing shows, two blocks are connected by a rope that passes over a set of…

A: The weight of the heavier block is: W = 908 NThe weight of the lighter block is: W'= 412 N

Q: A 129 kg crate is sitting at the top of a ramp, which is inclined at an angle of 26 degrees with…

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Q: A sign (mass = 5.6 kg) is hanging from the ceiling on two threads of equal length, which make an…

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Q: A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at…

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Q: Which statement is TRUE when the resultant of all the forces acting on the body is zero? O The body…

A: According to the Newton's second law of motion the net non zero force acting on a body cause…

Q: The tension in a string from which a 6.0-kg object is suspended in an elevator is equal to 44 N.…

A: Mass of object is Tension in the string is Note:Find:Acceleration of elevator.

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!