Question

explianydifyyyyf6diudid

Answer 1

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
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