A box kept on horizontal floor is being pulled across as
shown. What is the work done by gravity if the mass of
the box is 1 kg and the distance moved is 5 m? (Assume
there is no friction, g = 10 m/s)
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Explanation:
work done by gravity is, W=mg
where m is the mass and g is the acceleration due to gravity
Therefore,. W=1kgx10m/s²
W=10kgm/s²or10N
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