Question #50776
a stair is at 60 degree angle with roof. a man of 60 kg with 20 kg bag is using stair to go to roof. how much work he does?if he used the stair perpendicularly , how much work he did?

does both work same??
if same then why?
1
Expert's answer
2015-02-23T07:28:13-0500
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