a man raise a box of 20 kg to a height of 5 m in 2 min ,while another man raise the same box to ths same height in 5 min .work done by them will be the ratio
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work done by first man=(20)(5)(2)
=200J
work done by second man=(20)(5)(5)
=500J
therefore, ratio= 200/500= 2/5
ratio= 2:5
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