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9 Oct 2009 21:15:36 IST

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net contact of force between a body and a rough surface root 3 times the normal reaction.coefficient

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net contact of force between a body and a rough surface root 3 times the normal reaction.coefficient of friction is?

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djdylan2000. bits goa eee

Blazing goIITian

Joined: 7 Feb 2007

Posts: 1608

9 Oct 2009 23:10:15 IST

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let normal=N

co-eff be x

therefore (N²x²+N²)=3N² (normal and frictional forces are perpendicular)

{note net contact force= f+N }

x=(root2)

Coeff of friction is root2

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