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November 28, 2014

Homework Help: Mechanics for A-level

Posted by Bob on Thursday, April 5, 2012 at 6:17am.

An object of mass 50kg rests on a rough plane inclined at an angle z to the horizontal. It is supported in this position by a light string parallel to the plane which is attached to the object and fixed to a point at the top of the plane. The string has a breaking strain of 200N and the co-efficient of friction between the object and the plane is 0.2, Find the largest value of angle z which would allow the string to remain intact

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