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I have doubt in H-3 can we solve the problem without knowing about friction force

I have doubt in H-3
can we solve the problem without knowing about friction force

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Grade:12th pass

1 Answers

Chandan
121 Points
6 years ago
yes,why not
as there is no slipping
friction has no work to do
if you need friction it will be Umgcos(x)
where x is the inclination.

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