A force of 4.66 x 109 N was required to move a building block 1.65 x 107 mm. Calculate how much power was done by the crane if it took it 11.2 s.

Q: How much work is done by a shopper in pushing her grocery cart by a force of 55 N through a distance…

A: Given value--- Force = 55 N. distance = 80 cm. We have to find--- Work done.

Q: A force of 2 pounds is required to hold a spring 2.4 inches beyond its natural length. How much work…

A: Given: force applied, F = 2 pound displacement, S  = 2 inch

Q: A mass of 5000 kg is raised through a height of 10 meters in 20 seconds. What is (a) the work done…

A: Solution: (a) Work done in raising a mass up to certain height is given by: W=mgh Here, m is the…

Q: An elevator weighs 3600 N and must be lifted at a constant speed a vertical distance of 2.5 m in…

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Q: 50 W of power is required to to lift a barbell in 5 sec, How much work is done?

A: Power delivered on the system is equal to rate of work done on the system.

Q: what is the power required to lift  a 3 kg bag of nails 5 m in 10 s?

A: Mass (m) = 3kg Height (h) = 5m Time (t) = 10s

Q: A student weighing 400 N climbs a flight of stairs 2 m high in 6 s. What power in watts is required…

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Q: 6 J of work is done by a force in moving an object uniformly through 120 m in 1 minute. The force…

A: The solution can be given as,

Q: How much time is required for a car engine to do 278 kJ of work, if its maximum power is 95 kW?

A:

Q: An object has kinetic energy of 73 J. If its speed is 8.1 m/s, what is  its mass?

A: Given data: -  The kinetic energy of the object is E = 73 J. The speed of the object is v = 8.1…

Q: If a crane does 350J of work on a beam in 6 seconds, what is the crane's power?

A: Given The Work done by the crane is W = 350 J. The time up to which work is done is t = 6 s. The…

Q: How long Does it take a worker producing 200W of power to do 10,000 J of work?

A: Given data The power required by the worker is given as P = 200 W. The work required to do is given…

Q: Find the value of force applied if work done is 120.011 J and displacement is 21.021 m

A: Given data :                   Work done     =     W                  Displacement   =    d…

Q: If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do…

A: Consider the work exerted by the runner is 350 J. The power of runner is 125 W. The objective is to…

Q: Find the value of force applied if work done is 215 J and displacement is 8 m.

A: Given data : Work done=W Displacement=d   Required : Force

Q: What power is needed to move a 13.4 kN car up an 8 degree incline with a constant speed of 80 kph…

A: Given data:     Mass, m = 13.4 KN     Angle, θ=8 deg     Speed, v = 80 kph = 80/3.6 = 22.22 m/s…

Q: What work is done by a forklift raising a 487 kilogram box 2.1 meters?

A: Given  Mass m=487 kg Height h=2.1m

Q: A student weighing 311 N climbs a flight of stairs 3 m high in 6 s. What power in watts is required…

A:

Q: A contractor lifts beams (905 kg) 52 m using a 10 hp-rated crane. How much work is required to lift…

A:

Q: A computer uses 1.62 x 10^4 J in one hour. What is the power used?

A: The energy usage of device is 1.62 ×104J in one hour.    Power is the rate with respect to time at…

Q: A pallet weighing 575 N is lifted a distance of 20.0 m vertically in 10.0s. What power is developed…

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Q: A pair of bullocks exerts a force of 160 N on a plough . The field being ploughed is 18 m long . How…

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Q: A student weighing 292 N climbs a flights of stairs 9 m high in 5 s. What power in watts is required…

A: Power is given by:- Power(P) = work done(w)/time taken(t). Here, work done is against gravitational…

Q: What is the work done in lifting a 50 lb bag of salt 5 ft?

A: Work done

Q: What is the kinetic energy of a 1,904.53 kg car that travels at 7.92 m/s?

A:

Q: A force of 403.0 N is exerted on a 1,250 N car while moving it a distance of 2.69 m. How much work…

A: Given: The force exerted on the car is 403.0 N. The weight of the car is 1250 N. The displacement of…

Q: What work is done on a level track in bringing the velocity of a train weighing 200 tons from zero…

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Q: Suppose a spring has a natural length of 10 inches. To extend the spring 0.25 inches, a force of 25…

A: The force needed to extend a spring is given by F = kx, where k = the spring constant x = the…

Q: If a 600 N student climbed a 15 ft flight of stairs in 8 sec, what horsepower did that student…

A: Given data: Weight (mg) = 600 N High (h) = 15 ft Time (t) = 8 s Required: The power (P) in…

Q: If Marga exerts 350 J of work to make 125 W of power, how long did it take her to do the work in…

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Q: work is done on the cart

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Q: The SI unit of power is kg m' 3.

A: Given, unit is kgm^2/s^3

Q: How much power is required to lift a 3061 g chair at a height of 0.20 m in 2 s?

A: Mass of chair = 3061 gm = 3.061 kg. Weight = 3.061 ×9.8 = 30 N Workdone to lift the chair to 0.2 m…

Q: How much work must be done to stop a 925-kg car traveling at 110 km/h?

A: According to the work energy theorem, the work done on an object to change its state is equal to the…

Q: How much power is required to lift a 30 N chair 0.20 m in 2 s?

A:

Q: What is the kinetic energy of a 3000-lb automobile moving at 55.0 mi/h?

A: Here given that the mass of a automobile is 3000 lb also given that the velocity of that automobile…

Q: What power is needed to move a 4 kN car up an 8-degree incline with a constant speed of 80 kph…

A: Given data: Mass of the car m = 4kN=4000n Angle θ=8° Speed v= 80kph=80×518=22.22 m/s Frictional…

Q: Calculate the value of force applied if work done is 268 J and displacement is 24 m.

A: Work done is the dot product of force vector and displacement vector. W=F→.S→ = FScosθIf F→ and S→…

Q: If 6 Joules of work is needed to stretch a spring from 10 cm to12 cm and another 10 Joules is needed…

A: Let the natural length is l0 and spring constant is k. Then, the potential energy is:…

Q: If a winch pulls a broken down truck against a friction force of 500N, and does 3000J of work, how…

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Q: The kinetic energy of a car with a mass of 1250 kg traveling at a speed 35 m/s is 21875 J. If the…

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Q: A man pushes a lawn mower on a level lawn with a force of 203 N. If 53% of this force is directed…

A: The force acting on the lawn mover is F=53% of 203N=53100×203=107.59N

Q: An object has kinetic energy of 324 J. If its speed is 9 m/s , what is its mass?

A: Given data  Kinetic energy =324 J  Speed   = 9 m/s  Mass = ?

Q: A student weighing 279 N climbs a flight of stairs 5 m high in 9 s. What power in watts is required…

A:

Q: A shopper does 50 J of work to move a cart by 10 m. What was the force required to do this?

A: Required : Force required

Q: A student weighing 300 N climbs a flight of stairs 6m high in 4 s. What power is required to perform…

A: Here work is done against gravitational force F = mg = 300 N

Q: How long (in s) does it take a worker producing 155 W of power to do 10,100 J of work?

A: The relation of the power is given as P=Wt Let W be the work done, P be the power, and t be the time…