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Define work, power and energy. State their S.I units? |
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Answer» Work : The product of magnitude of displacement (S) and component of force (Fcosθ) along the direction of force is called work. i.e., W = vector F.S = F S cos θ. Unit → Joule; Power : The rate of doing work by a force is called power. P = w/t, Unit → watt (or) J/S Energy : The capacity to do work is called energy. Unit → Joule |
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