Difference between work against gra-
vity and work against friction
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Explanation:
Work done against the gravity:
Work must be done against gravity when a body of mass is lifted to a from earth to a certain height. ... Work done by a body is against the applied force if the displacement is in a direction opposite to the force.
Work is the action of a force over some displacement caused by the force. Friction is the force which opposes the motion of an object in contact with a surface. ... Thus, we may say that the work is done 'against' the friction since they act in opposing directions.
Hope this helps mate ☺️.
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