why in carrying so many boxes on head the work done is zero?
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6
Answer:
Gravitational force on the box is acting in the downward direction. Since the boy walks horizontally, his vertical displacement is zero. Hence, when a boy carrying load on his head moves over a horizontal road, work done against gravitational force is zero.
Answered by
7
Answer:
Gravitational force is also acting from opposite direction
so the forces will subtract
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