Question
Sun March 23, 2014 By: Nakshatra

prove that angle of friction is equal to angle of repose in the limiting friction.

Expert Reply
Sun March 23, 2014

Consider the figure .

angle of repose

The weight W can be resolved into two rectangular components. W cos f and W sin f. The component W cos f balances the normal reaction R while the component W sin f is equal to the limiting friction flimiting.

We notice that the angle of repose or sliding and the angle of friction are both equal.
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