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December 17, 2014

Homework Help: Physics

Posted by Anonymous on Sunday, May 13, 2012 at 12:15am.

A block of mass m lies on a rough plane which is inclined at an angle to the horizontal. The coefficient of static friction between the block and the plane is . A force of magnitude P is now applied to the block in a horizontal direction, towards the plane.

Show that the minimum value of P which is necessary to ensure that the block remains at rest on the plane, is

P=[mg(sin-cos)]/(sin+cos)

Please help! Thanks!

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