A winch motor generates 500 W and uses it to pull a 250 kg crate across a horizontal floor. The crate starts from rest and the winch is applied for 5 seconds. The final speed of the crate is

Q: Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the…

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Q: A 4.23 kg bundle starts up a 22.4° incline with 103 J of kinetic energy. How far will it slide up…

A: The expression from work energy theorem,

Q: An electric engine in a 2.0 kg remote-control toy car has a power output of 4.0 W. How fast will it…

A: Energy = Power * time P=power = 4 W time=t=5 s   Energy=E= 4*5=20   mass=m=2.0 kg

Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

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Q: A80 A compressed spring is used to propel a ball- bearing along a track which contains a circular…

A: Here we can use conservation of energy to find speed at top. And newton second law at top to get…

Q: A 1,000 kg sports car accelerates from 0 to 30 m/s in 13 s.  What is the average power of the…

A: Mass of the car,(m)=1000 kg ----(1) [Given] The initial velocity of the car,(vi)=0 m/sec ----(2)…

Q: A 64 kg human sprinter can accelerate from rest to 10 m/sm/s in 3.2 s . During the same time…

A: P=∆E∆t=0.5mv2f-v2i∆t

Q: 9) A small object of mass m slides along the frictionless track in the figure, staring from rest at…

A: object moves through a frictionless curve so there is no loss of energy and hence total energy is…

Q: A 46.1-g golf ball is driven from the tee with an initial speed of 42.1 m/s and rises to a height of…

A:

Q: A windmill can generate 4.9 x 103 W of power.  How long will it take to fully  cook a leg of lamb…

A: Given in question -   Power of windmill (P) = 4.9 x 103 W                                     Work…

Q: What average power is needed to lift a 65-kg vendor vertically upward at a uniform speed of 0.44…

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Q: I have a motor that is rated for 6000 W. What is the maximum amount of work that the motor can do in…

A: Given data The power of the motor is P = 6000 W The time taken to work is t = 10 s The mass of the…

Q: 16. A force F = (3i – 5+ 2k)N acts on a particle giving it a displacement of(3i + 4k)m. The work…

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Q: You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the…

A: According to question --- Given that-- Distance = 1.1 m. time = 1.3 sec. power = 90 W. We have to…

Q: A 500 kg elevator cab is descending with speed vo = 4 m/s when the winch system that lowers it…

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Q: Three objects with masses m1 = 5.2 kg, m2 = 12 kg, and m3 = 18 kg, respectively, are attached by…

A: Given that - Masses m1, m2 and m3 Friction Force Displacement To Find - We have to calculate the…

Q: GO You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the…

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Q: An elevator can carry a maximum load of 1168 kg (including the mass of the elevator car). The…

A: The weight pf the counter drops down a height h when the elevator moves up a height. So the elevator…

Q: Grains from a hopper falls at a rate of 22.1 kg/s vertically onto a conveyor belt that is moving…

A: Given: dmdt = 22.1 kg/sv =4.75 m/s

Q: While training for a dog show, a 3.8 kg dog does 32 pushups in a minute, displacing its center of…

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Q: A toy robot powered by an electric motor accelerates from rest to 0.800 m/s in 22.0 ms. The total…

A: Write a given value of this question. v=0.800m/s t=22ms=22×10-3sm=740g=0.740kg

Q: A pitcher bestows a power of P = 206 W to a baseball of mass m = 0.095 kg for a period of t = 0.28…

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Q: The power source for a non-electric grandfather clock is a 12.0 kg weight that hangs by a chain and…

A: The work done by the power source is, W=mgd=12.0 kg9.8 m/s20.750 m=88.2 J The time period is, t=1…

Q: A 700 N Marine soldier in basic training course climbs a 10.0 m vertical rope at a constant speed in…

A: Given, Weight of Marine soldier =W=700 N Height of climbing=h=10.0 m Time is taken by the soldier to…

Q: A car's engine generates 80000 W of power as it exerts a force of 6000 N. How long does it take the…

A: Given, Power generates engine of the car, P = 80000 Wforcec exerted by engine, F = 6000 Ndistance…

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at…

A: In this question we are given that an athlete lifts a barbell that weighs 400 N from the ground to a…

Q: A 47.8-g golf ball is driven from the tee with an initial speed of 41.4 m/s and rises to a height of…

A:

Q: a. 9.4 m/s b.8.0 m/s 17S d. 5.2 m/s 11. A ball is released from h and goes around a loop-the-loop.…

A: Given values:h = 3.5 RInitial speed of the ball, u = 0 m/sLet the speed at the top of the loop be…

Q: 19. If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at…

A: average weight of a passenger= 660 N Total weight lifted= 100×660= 66000 N Height H= 150 m time…

Q: What average power is needed to lift a 65-kg vendor vertically upward at a uniform speed of 0.44…

A: Given: The mass (m) of the vendor is 65 Kg. The uniform velocity (v) of the vendor is 0.44 m/s.…

Q: 300 The mass of a pendulum bob is 0-2 kg, and it is suspended by a string 1 m long. It is pulled…

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Q: erson of mass 60 Kg climbs a tall building (height 120 m) at a steady pace in 18 minutes. What is…

A: Given: mass = 60 kg height = 120 m time = 18 minutes Need to find the average power generated by the…

Q: You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the…

A:

Q: A 35.0 kg crate sits on a conveyor belt with s = 0.870. The conveyor belt starts at rest. Once it…

A: Power P required to move a weight of FG=mg at a velocity v is given by the formula P=μFGvcosθ,…

Q: 12. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the…

A: Given data The time taken by the person is t = 10 s. The person weight is W = 600 N. The vertical…

Q: A 47.0 g golf ball is driven from the tee with an initial speed of 58.0 m/s and rises to a height of…

A: Given, Mass of golf ball = 47.0 g = 0.047 kg Speed = 58.0 m/s Height = 24.0 m

Q: A swimmer moves through the water at an average speed of 0.22 m/s. The average drag force is 110…

A: Given , velocity of the swimmer V  = 0.22 m/s Average drag force F = 110 N The swimmer has to do…

Q: 8. The engine delivers 1.20 × 105 w to a plane fan at w = 2400 rev/ min = 251 rad/s. How much work…

A: Given: power P =1.20*105 Wangular freq ω=251 rad/min

Q: The loaded cab of an elevator has a mass of 1.40 × 10° kg and moves 246. m up the shaft in 21.0 s at…

A: The rate of the doing of the work done by the force at a given instant is called instantaneous power…

Q: A particle of mass 0.500 kg is shot from Pas shown in Figure P8.10. The particle has an initial…

A: Motion of projectile can be divided into x component and y component.

Q: A person used 60 W of power to carry a 55 N box up a 5 m ladder. How long did it take him to do…

A: We know, work done (w)= Force×displacement =F×d And power(P)= W/t So time taken to do the work (t) =…

Q: What is the average power output of a 55.0 kg woman who does 50 deep knee bends in which her center…

A: The expression for the output power is,

Q: Consider the figure below: 120 N m = 30.0 kg f = 5.00 N d = 0.800 m w N Calculate the total power…

A:

Q: A car travels with a constant speed of 15 m/s. The car's engine produces a 4000N pushing force in…

A: Given Data:- Speed of the Carr is v=15 m/s Force produced by the engine of the car is F=4000 N…