A driver climbs up the stairs to the diving tower. The work he does climbing the stairs is?

Q: A 35 kg girl runs up a flight of stairs that is 35 m high. How much work does this require?

A: The work done is equal to the change in gravitational potential energy. that is, W=Uf-UiW=mgh-0W=mgh

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: The SI unit of work is

A:

Q: A rock weighs 165 lb and is lifted 1 ft by the lever to be 3 ft. How much work is done?

A: Given:- The weight of the rock  W = 165 lb  The lifted by the h= 1 ft  The lever height d = 3 ft…

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: A spring, whose equilibrium length is 4 ft, extends to a length of 7 ft when a force of 4 Ib is…

A: Given,equilibrium length of spring 4 ftextend to 7 ftforce, F = 4 lbwork done, W = 8 ft-lb

Q: What force is needed to move a barrel 25 meters if 225 Joules of work are accomplished?

A: Given ,         work done to move the barrel (W) = 225J         displacement  (d) = 25 m…

Q: A Car of 1100 Kg mass changes the speed from 4 m/s to 6 m/s. What is the work done ( in Joules) by…

A: According to the work-energy theorem, Here, KEi and KEf represent the initial and the final kinetic…

Q: How much mechanical work is done in letting the 2kg brick fall a distance of 1 meter?

A: Given data:     Mass of the brick, m = 2 kg       Distance, D = 1 m      Acceleration due to…

Q: A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over a building 120 ft high. How much work is…

A:

Q: How much potential energy does a car gain if a crane lifts the car with a mass of 1,500 kg and 20 m…

A: The expression for the potential energy gained by the car is, P.E=mgh           (I)…

Q: How much work would you do if you climbed 8 meter up a tree, if your weight is 57 kilograms?

A:

Q: The rate of doing work is known as

A: In physics, the rate of doing work is known as Power. It is equivalent to an amount of energy…

Q: How much work would have to be done to bring a 1030-kg automobile traveling at 86 km/h to a stop?

A:

Q: How much work does it take to stop an 800 kg car traveling at 25m/s? If it takes 2 s to stop, what…

A: Given data:  Mass of car (m) = 800 kg Initial speed of car (Vi) = 25 m/s Time (t) = 2 s Required:…

Q: A 40 kg mass is lifted to a height of 50m. What is the work done? How much energy is spent?

A: Given:-  The mass of the lift m = 40 kg  The height  of the mass is h=50 m  Find:-  What is the work…

Q: What is the amount of work done when a 10 kg box is pulled 5 m across a smooth floor with a force of…

A: Given that: Mass of the block, m=10 kg Applied force, F= 50 N θ=30° Distance moved, s= 5 m

Q: How much work is done lifting a 30 kilogram block 3 meters?

A:

Q: Pushing a crate up a 3 m long ramp results in 6000 J of work. If the ramp's efficiency is 50%, how…

A: Given: d = 3 m Wo=Output work = 6000 J e = 50%

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

A:

Q: A weightlifter lifts a 240 kg weight a vertical distance of 0.3 m in 0.9 s. What is the power…

A: Given,        mass of the object (m)= 240 kg        vertical distance (h)= 0.3 m        time (t) =…

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

A: Work done

Q: How much work is done?

A:

Q: What is the work done in lifting 30 kg of bricks to a height of 20 m on a building under…

A: Given data: Mass (m) = 30 kg Height (h) = 20 m Required: The work done (W)

Q: A car slows from 30 m/s to 18 m/s . If the car's mass is 1200 kg, how much work was done to slow the…

A:

Q: How much work is done lifting a 40 kilogram block 3 meters?

A: Given data:  Mass (m) = 40 kg Height (h) = 3 m Required: Work done (W)

Q: Shelby weighs 750N and the staircase is 6m tall. She runs to the top of the stairs in 4.8 seconds.…

A:

Q: how much work is done when a box is pushed with a force of 10n for 4 m across the floor

A: Here the force is 10N, and the distance is 4m,

Q: How much work is required to lift a 5.0-kg concrete block to a height of 3.4 m?

A: Work required to lift the concrete is given by, W=Fr........................(1) Where, W=work…

Q: 5 joules of work is needed to stretch a spring from its natural length of 30 cm to a length of 44…

A: Write the expression for the work-done to stretch the spring from 30 cm to 44 cm, and solve the…

Q: How much work is done by the force of gravity when a 45N object falls to the ground from a height of…

A:

Q: How much work is done by 2 kg fish that changes its speed from 1 m/s to 3 m/s

A:

Q: If you push a box of supplies across 6 meters on a floor that exerts 110 newton of frictional force,…

A:

Q: How much work is required to lift a 2.6-kg concrete block to a height of 1.3 m?

A: The work needed to lift the concrete block is

Q: How much work is done in lifting a 100-kg load of bricks to a height of 30 m on a building under…

A: Given data: Mass (m) = 100 kg Height (h) = 30 m Required: Work (W)

Q: How much work is done to move a 10900 N car 28 meters?  joules

A: Given data The force to move the car is F=10900 N The distance move by the car is d=28 m   The work…

Q: One horsepower - hour is the work done in one hour by an agent working at the constant rate of one…

A: To determine: The definition for one horsepower hour.

Q: How far will a 150 Newton crate be moved if 600 Joules of work are performed?

A:

Q: What is the work done in lifting a 60kg block to a height of 20 m?

A: The given values are, m=60 kgh=20 m

Q: How much work is required or lift a 4.1 kg concrete block to a height of 2.5 m?

A: Potential energy is the energy that is equal to the product of mass, gravitational acceleration, and…

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: What is the total work done?

A:

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

A:

Q: If 5J of work are done on a spring, compressing it by 12cm, what is the spring constant?

A: Solution ;       Given data -            W = 5J            X = 12cm = 0.12m

Q: A weightlifter raises a 700 N barbell a distance of 3 m.  How much work was done?

A: When weightlifter raises barbell by applied force it displaced to some distance , work is to be done…

Q: A chain 59 meters long whose mass is 23 kilograms is hanging over the edge of a tall building and…

A: It is given that,

Q: A weightlifter lifts barbells of 200 Newtons above his head to a height of 2 metres. How much work…

A: Given Weight of barbells w=200N  Height raised h=2m