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Work, Energy and Power
Conservative force is said to be conservative if work done in taking the system from one point to other point is independent of path followed but depends upon initial and final position.
Examples:
Electrostatic force, gravitation force.
Work done by conservative force along closed path is zero.
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By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?
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