A uniform chain 10 m long and with mass 20 kg is hanging from the top of a building 10 m high. If a bucket filled with cement of mass 55 kg is attached to the end of the chain, how much work is required to pull the bucket and chain to the top of the building? (Assume g = 9.8 m/s2 )

Q: A father is pulling his  son on a sledge with a 120 N force at an angle of 45 degrees with the…

A: Given Amount of force is F=120 N Angle  is θ=45 degrees with the horizontal Work done is W=400 J

Q: A rope that weighs 0.5 lb/ft is attached to a bucket filled with cement plaster that weighs 22 lbs.…

A: Given information: The linear weight density of the rope (μ) = 0.5 lb/ft The weight of cement…

Q: A toy rocket weighing 3 kg holds 4 kg of compressed water as fuel. As the rocket rises it loses…

A: The mass of toy rocket is M=3 kg. The mass of water fuel is m=4 kg. The height at which rocket runs…

Q: A skier of mass 65 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

A: Given:-  mass of the skier m= 65 kg  height h= 85 m  slop is θ=30° The speed of the skier is v= 2.2…

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: An object of mass 3.00 kg is dropped off the top of a building which is 46.1 m high. How far is the…

A: The objective of this question is to find the height above the ground when the kinetic energy of the…

Q: An elevator has a mass of 3,000 kg and moves 210 m up in 27 s at constant speed.  At what average…

A: Given m=3000kg x=210m t=27s

Q: A heavy box is to be moved from the floor to a sturdy shelf 2 meters above the floor. You have two…

A: Work done is change in energy To move the box from floor to sturdy self 2m high we need to do work…

Q: A chain with length 1 meters and mass m kilograms hangs vertically. Which of the integrals below…

A: Given that, the mass of the chain is m the length of the chain is l The other end of the chain is…

Q: The roof of a large arena, with a weight of 480 kN, is lifted by 34 cm so that it can be centered.…

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Q: A student who weighs 546 N climbs a stairway (vertical height of 3.2 m) in 27 s. (a) how much work…

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Q: A man pushes a lawnmower on a level lawn with a force of 193 N. If 40% of the force is directed…

A: Given: The force is F=193 N The horizontal force is FH=40100F=0.4×193 N=77.2 N The displacement is…

Q: Say I lift a box from the ground straight up to 1m in 2s. If I lift the same box from the ground but…

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Q: A toy rocket weighing 3 lbs holds 1 lb of compressed water as fuel. As the rocket rises it loses…

A: The mass of toy rocket is M=3 lbs. The mass of water fuel is m=1 lbs. The height at which rocket…

Q: When an 78.8-kg adult uses a spiral staircase to climb to the second floor of his house, his…

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Q: A block of mass m=3.9kg is placed on a rough inclined surface making an angle of θ=38o with the…

A: The work done by a force is given as W=F→.S→Where F is applied force and S is the displacement The…

Q: A cable exerts a constant upward tension of magnitude 1.04 x 10^4 N on a 1.60 x 10^3  kg elevator as…

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Q: When an 85.4-kg adult uses a spiral staircase to climb to the second floor of his house, his…

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Q: A rare and valuable antique chest is being moved into a truck using a 3.000 m long ramp. The weight…

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Q: 1. (a) What is the average useful power output of a person who does 7.00 x 106 J of useful work in…

A: average power output is given bywhere, is the work done is the time of work done.

Q: f 27 J of work is needed to stretch a spring from 18 cm to 24 cm and another 45 J is needed to…

A: Given data as per question energy used  is  27J

Q: A man pushes a lawn mower on a level lawn with a force of 192 N. If 45% of this force is directed…

A:

Q: A metal wire of length 2.5 m and area of cross-section 1.5 x 106 m² is stretched through 2 mm.…

A: We have to find work done (W) Given that, Length of wire L is 2.5 m Y is 1.25×1011 N/m2

Q: A spring has a natural length of 28 cm. Suppose a 26 N force is required to keep it stretched to a…

A: Given value--- Natural length = 28 cm . Stretched length = 38 cm . Force = 26 N. We need to…

Q: When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his…

A:

Q: A box is supported by a 4.6 N vertical force and carried 2.3 m horizontally across a room at…

A: Force F = 4.6 N Displacement x = 2.3 m

Q: To compress a spring 5.0 cm from its unstretched length, 18.0 J of work must be done. (a) What is…

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Q: A man pushes a lawn mower on a level lawn with a force of 185 N. If 48% of the force is directed…

A:

Q: A spring has a natural length of 40 cm (or 0.40m). If a 60-N force is required to keep the spring…

A: The objective of this question is to calculate the work done in compressing a spring from its…

Q: A bag of wheat weighs 170 kg. To what height should it be raised so that potential energy is 8614 J?…

A: Given data :                    Acceleration due to gravity    =    g                    Potential…

Q: A chain of length 11 m and a mass per unit length of 0.6 kg/m initially lies coiled on the ground.…

A: