a coolie climbs the stairs while carrying a bag on his head.Is he workiing or not
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no he is not doing work because we know that ...work = force × displacement
work = FScostheta
here coolie climbs in vertical direction makes angle of 90 degree
therefore, work = FScos90 degree ...which is zero ....it means no work is done by coolie.
work = FScostheta
here coolie climbs in vertical direction makes angle of 90 degree
therefore, work = FScos90 degree ...which is zero ....it means no work is done by coolie.
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0
Answer:
Answer:
Yes the work is done by the coolie when is climbing up the stair case
Explanation:
For example when a coolie is carrying some load on his head and climbs up
the staircase he does some positive work force and displacement are parallel to each other . so on the load as there is some upward displacement. In this case the force exerted by the coolie (mg) and the displacement both are in the upward direction
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