Sarita lives on 3rd floor of building at height of 15 m .She carries her school bag weighting 5.2 kg from the ground floor to her house. Find the amount of work done by her and identity the force against which she has done work . (g=10)
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The work done=force×displacement
here,F=m×a,instead F=m×g
f=5.2 ×10=52N
therefore,work=52×15=780joule.
and she is against the gravitational force,as she climbs up.
here,F=m×a,instead F=m×g
f=5.2 ×10=52N
therefore,work=52×15=780joule.
and she is against the gravitational force,as she climbs up.
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