when we are lifting any load on our head then what is the work done in that case
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it's 0 since force and displacement are in perpendicular directions
challenger:
but how
displacement is in upper direction but force is in downward direction
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zero work done..
becusE here theta is 90 degree.
theta is between the load on head and the floor we r walking...
becusE here theta is 90 degree.
theta is between the load on head and the floor we r walking...
but how theta is 90
as direction of force is upward direction and direction of displacement is downward direction
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