explianydifyyyyf6diudid
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hy
here is your answer
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solution:- power expended by girl A
weight of the girl mg=400N
displacement h=8
time taken t =20s
power p=work done/time taken
=mgh/t
=400N×8m/20s
=160W
2) power expended by girl B
weight of the girl, mg =400N
displacement h=8m
power P=mgh/t
=400N×8m/50s
=64W
power expended by A girl is 160W
power expended by girl B is 64W
======================
here is your answer
=================
solution:- power expended by girl A
weight of the girl mg=400N
displacement h=8
time taken t =20s
power p=work done/time taken
=mgh/t
=400N×8m/20s
=160W
2) power expended by girl B
weight of the girl, mg =400N
displacement h=8m
power P=mgh/t
=400N×8m/50s
=64W
power expended by A girl is 160W
power expended by girl B is 64W
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