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a body of mass W is kept on a rough surface angle of friction is theta what is minimum force required to just move it?

a body of mass W is kept on a    rough surface  angle  of friction  is theta what is minimum force required to just move it?


 

Grade:9

1 Answers

Vishaal Mohan
17 Points
9 years ago

If u draw free body diagram, u will come to know that the sine component of weight and the force that you apply act down the plane(for min force reqd the force has to be down the plane) and the friction acts up the plane. Normal force perpendicular to surface touching the plane. So writing eqns,  F  +  mg sin a   =  fwhere fs is limiting friction. Rearrange and u'll get the answer.

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