Two smooth block are placed at a smooth corner as shown in fig. Both the bloks are having mass m. We apply a force F on the block m. Block A presses block B in the normal direction, due to which pressing force on vertical wall will increase, and pressing force on the horizontal wall decreases, as we increases `F(theta = 37^(@)` with horizontal). As soon as the pressing force on the horizontal wall by block B become zero, it will lose contact with ground. If the value of F further increases, block B will accelerate in the upward direction and simulaneously block A will towards right. If both the blocks are stationary, the force exerted by ground of block A isA. `mg +(3F)/(4)`B. `mg -(3F)/(4)`C. `mg +(4F)/(3)`D. `mg -(4F)/(3)`

Two smooth block are placed at a smooth corner as shown in fig. Both t

1.	Two smooth block are placed at a smooth corner as shown in fig. Both the bloks are having mass m. We apply a force F on the block m. Block A presses block B in the normal direction, due to which pressing force on vertical wall will increase, and pressing force on the horizontal wall decreases, as we increases `F(theta = 37^(@)` with horizontal). As soon as the pressing force on the horizontal wall by block B become zero, it will lose contact with ground. If the value of F further increases, block B will accelerate in the upward direction and simulaneously block A will towards right. If both the blocks are stationary, the force exerted by ground of block A isA. `mg +(3F)/(4)`B. `mg -(3F)/(4)`C. `mg +(4F)/(3)`D. `mg -(4F)/(3)`
Answer» Correct Answer - C `F =N sin 37^(@) , N_(A) = mg + N cos 37^(@) = mg + (4)/(3) F` .

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