Tue December 04, 2012 By: Sreejith.suresh

what is angle of repose

Expert Reply
Thu December 06, 2012

The minimum angle of inclination of an inclined plane for which an object placed on the inclined surface just begins to slide is called angle of repose.


At angle of repose, the angle of inclination Q is such that w sinQ = f (f = frictional force) and the body begins to slide with zero acceleration.

And we know,

f = µ (w cosQ) [µ is the coefficient of friction]


w sinQ = µ w cosQ

= >tanQ = µ

= > Q = tan-1µ

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