Define positive work, negetive work and zero work?
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Positive work done---- when force and diaplacement are in same direction. angle is 0
negative work done ----- when force and displacement are in opposite direction .
angle is 180.
zero work done-- when force and displacment are at an angle of 90
negative work done ----- when force and displacement are in opposite direction .
angle is 180.
zero work done-- when force and displacment are at an angle of 90
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