A triangular block mass m rests on a fixed rough inclined plane having friction coefficient mu with the block. A horizontal force F is applied to it as shown in figure below, then the correct statement is :

A triangular block mass m rests on a fixed rough inclined plane having

1.	A triangular block mass m rests on a fixed rough inclined plane having friction coefficient mu with the block. A horizontal force F is applied to it as shown in figure below, then the correct statement is :
Answer» FRICTION force is zero when `F COS theta = mg sin theta` The VALUE of LIMITING friction is `mu (mg sin theta + F cos theta)` Normal reaction on the BLOCK is `F sin theta + mg cos theta` The value of limiting friction is `mu (mg sin theta - F cos theta)` Answer :a,c