block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in 5s under the influence of an external force. What is the work done by the external force? a) 2000 J b) -2000 J c) 20000 J d) -20000 J
Q: ohn, of mass 82.4 kg can do work for about 2.0 minutes at the rate of 1.0 hp. How long will it take…
A: Given data: Mass (m) = 82.4 kg Power (P) = 1.0 hp Height (h) = 12.0 m 1 hp = 746 watts Required:…
Q: The horizontal force on the car varies with x as shown in the figure. What is the work done on the…
A: Page 1Figure:
Q: You push your 250N wagon up a ramp that is 10 m long and forms an angle 20 above the horizontal. How…
A: Work done = Force . displacement W = F.d Where (.) Is a dot product of Force and…
Q: Is work done whenever an object moves through a distance? Explain.
A: SOlution: To explain, if the work done whenever an object moves through a distance
Q: Q6) A snowball starts sliding down from the top of a hemispherical surface as shown in the figure…
A: We will first write an expression for work done by a force in displacing an object. We then…
Q: In the figure shown, if the mass (m-9 Kg) is moving with constant speed and traveled a distance d=16…
A:
Q: Is work done whenever a force is exerted? Explain.
A: Force F is applied to body to displace it from one position to another position, then work done on a…
Q: WE-2 A 65.0kg crate is initially moving at 5.00m/s up a rough ramp. A horizontal force P=400N pushes…
A: Force is an external agent that has the ability to change the state of rest or motion of a certain…
Q: The force F = (3i - j) N acts on a particle, causing a displacement of Ar = (3i + 2j) m. Find the…
A: Answer W=7 J
Q: I Review I Constants An 8.5 kg crate is pulled 5.4 m up a 30° incline by a rope angled 19° above the…
A:
Q: A robot is capable of lifting heavy objects directly up a ladder. The manufacturer claims the robot…
A: Mass of robot m = 500 kgThe power output of the robot is P = 150,000 W
Q: A person picks a 1.00 kg box of macaroni from off the shelf and lowers it 0.77 m into a shopping…
A: Given:- The mass of the box of macaroni is m = 1.0 kg. The distance the person put that box is d =…
Q: A 4.20-kg box has an acceleration of 2.10 m/s2 when it is pulled by a horizontal force across a…
A:
Q: Why does the force of gravity do work on a car that rolls down a hill but no work when the same car…
A: We know the expression for work is W= F.scosθ The force of gravity do work on a car that rolls…
Q: 8.) When a force acts on an object from an angle other than either 0° or 180° to the direction of…
A: When a force acts on an object from an angle other than either 0° or 180° to the direction of motion…
Q: Example 74 Calculating Total Work Done from a Graph A force acting on a particle varies widh , as…
A:
Q: The brakes of a truck cause it to slow down by applying a retarding force of 6370 N to the truck…
A: Given data: Force (F) = 6370 N Distance (d) = 1160 m Angle between force and displacement (θ) =…
Q: Mike is cutting the grass using a human-powered lawn mower. He pushes the mower with a force of 45 N…
A:
Q: Alex and John are loading identical cabinets onto a truck. Alex lifts his cabinet straight up from…
A: Correct Answer : John does more work than Alex.
Q: A student could either pull or push, at an angle of 300⁰ from the horizontal, a 60 kgkg crate on a…
A:
Q: In the figure shown, if the mass (m=6 Kg) is moving with constant speed and traveled a distance…
A:
Q: 3. A body moves from point A to point B under the action of a force varying in magnitude as shown in…
A:
Q: A man claiming a mountain carrying a bag with mass 7.5 kg, after 30 min he reach 8.2 m height from…
A: Given data *The mass of the bag is m = 7.5 kg *The given time is t = 30 min *The height from the…
Q: A student drags a 3 kg box 5 m across a rough floor with a force of 40 N. A frictional force of 10 N…
A:
Q: 1.A force of Si + j+ 2k N displaced a body from a position of i+j+km to 2i+4j+ 6k m. How much work…
A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…
Q: Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.…
A:
block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in 5s under the influence of an external force. What is the work done by the external force?
a) 2000 J
b) -2000 J
c) 20000 J
d) -20000 J
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 7. A student in a lab exerts a 25 N force to pull a block a distance of 48 cm. If a total of 11 J of work is done, the angle between the force and the displacement is a. 89° b. 66° d. 24° e. none of the above c. 61° 8. A 102-g sparrow flying at 12.3 m/s wishes to have equal kinetic and gravitational potential energies. The height that will accomplish this is a. 0.315 m b. 0.628 m d. 1.13 m e. 7.72 m c. 0.787 m 9. Earth's mass is 5.98 x 1024 kg. Calculate the value of g at a point 4.8 x 105 km from the centre of Earth. a. 9.8 × 102 N/kg b. 8.3 x 10' N/kg C. 1.7 × 103 N/kg d. 1.7 x 10³ N/kg e. 9.8 × 105 N/kg 10. A piece of paper becomes electrically charged when a charged rod of plastic is placed close to it. This is referred to as a. charging by a conductor b. charging by induction c. charging by an insulator A P d. charging by contact e. charging by electricity 20 cm Ꭰ T 20 cm 11. Four charged spheres, A, D, P, and T are arranged as shown below. Sphere A has a charge of +4.5 × 10*C,…A force of 100N acts on a block at an angle of 53° with respect to the horizontal, as shown. As the block moves through a displacement of 4 m to the left, the work done on the block by the force is A) +320 Nm B) +240 Nm F C) zero Ax D) -240 Nm E) -3200 Nm O A O D O E20
- An object is displaced by 0.5m against a force of friction at 2N. What is the work done on the object by the friction? -6J 1J -1J 4Jdo on the shopping cart? W -107.5 J 2. You apply a force of 1.5 N at an angle of 34° from the vertical on a block that is sitting on a friction-less table. The force you apply causes the block to slide across the table for 1 m. How much work did you do to move the block? 0.84 J 3. An 8.5 kg package in a mail sorting room slides 20 mdown a chute thatMike is cutting the grass using a human-powered lawn mower. He pushes the mower with a force of 45 N directed at an angle of 41° below the horizontal direction. Calculate the work that Mike does on the mower each time he pushes it 9.1 m across the yard. A) 483J В 358 J c) 437 J D) 309 J
- The brakes of a truck cause it to slow down by applying a retarding force of 7680 N to the truck over a distance of 760 m. What is the work done by this force on the truck? Number UnitsNonea) Calculate the work done when a 5.0 kg bag of apples is lifted 1.2 off the ground. b) If this bag of apples is carried at this height to the checkout counter, is any work done? Justify your choice. c) Calculate the power developed when the action of lifting the apples takes 2.0 s.
- A force F=(4- 3N acts on an object as it moves in the x direction from the origin to S. The work done on the object by the force is Select one: а. 50 J b. 42 J С. 36 J d. 28 J150.0 J of work is done while lifting a 200.0 N box 0.75 meters up over your head towards a shelf. Given this information, how much P.E. does the box after it was raised? A) 0 J B) 150 J C) 266.67 J D) 1102.5 J E) don't be silly, it's none of these!