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The amount of work done depends on the magnitude of and displacement.

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Important Questions on Work, Energy and Power

MEDIUM
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Derive a relationship between SI and CGS units of work.
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Science>Physics>Work, Energy and Power>Work
Heat and work done by the heat was discovered by
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Science>Physics>Work, Energy and Power>Work
Spring constant of a spring is K = 6 ×103 N/m. Work done to stretch it 10-2 m from mean position is
MEDIUM
Science>Physics>Work, Energy and Power>Work
A body is displaced by 10 m when maximum work of 200 joules is done on it. Calculate the force acting on this body.
HARD
Science>Physics>Work, Energy and Power>Work

A force is applied upon a body of 40 kg then its velocity increases from 1
metre/second to 2 metre/second. Determine work done by the force.

HARD
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An object of 40 kg mass is moving with 5 m/s velocity. Now force is applied on the object such that its velocity increases to 10 m/s. Calculate the work done by the force.
EASY
Science>Physics>Work, Energy and Power>Work
A force of 40 N acts on a body, and body moves through a distance of 2 metre at an angle of 45° in the direction of the force. The work done by the force is 
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Science>Physics>Work, Energy and Power>Work
Convert 1 kilowatt-hour into joules.
HARD
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A pump on the ground floor of a building can pump up water to fill the tank of 30 m3 in 15 min. If the tank is 40 m above the ground, and the efficiency of the pump is 30%, the power consumed by the pump is g=10 m/s2
EASY
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160 joule of work is done when a force of 20 N is applied on an object. Calculate the distance through which the object moves and state its direction.
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Science>Physics>Work, Energy and Power>Work
The amount 1 J is equivalent to
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Science>Physics>Work, Energy and Power>Work
A magnetic crane lifts a mass of 1000 kg through a height of 50 m. Calculate the work done by the crane. (Take g=10 ms2)
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Science>Physics>Work, Energy and Power>Work
What is the SI unit of work?
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What should be the angle between force and displacement, such that we obtain negative work?
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Science>Physics>Work, Energy and Power>Work
A person of mass 50 kg climbs a tower of height 72 m. Calculate the work done. (take g=10 ms2).
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Science>Physics>Work, Energy and Power>Work
What is the amount of work done on a body of mass 10 g moving in a circular path of radius 5 cm?
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Science>Physics>Work, Energy and Power>Work
When is the work done by a force on a body said to be positive? Give two examples.
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Science>Physics>Work, Energy and Power>Work
When does a force perform work ?
MEDIUM
Science>Physics>Work, Energy and Power>Work
What should be the angle between force and displacement to get maximum work?
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Science>Physics>Work, Energy and Power>Work
When the force applied on a body is increased, the work done on it