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Two girls each of weight 400N …

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Two girls each of weight 400N climb up a rope through a height of 8m.girl a takes 20s n girl b takes 50s to acomplish this task.what is the power expended by the girls

Posted by Nibha Prakash 7 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Pratibha Pandey 3 years, 3 months ago

Ok so lets take F=400N (given)(weight) s=8mtr (Given) so lets first find the work done= W=F.S W= 400x8 W=3200J Now lets calculate the powers P=Work done/Time P1= 3200/20 P1=1600W P2=3200/50 P2=640N

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