Question

Select One Correct Option from the following: A block of base $10 cm \times 10 cm$ and height 15 cm is kept on an plane. The coefficient of friction between them is$\sqrt{3}$ The inclination $\theta$of this inclined plane from the horizontal plane is gradually increased from $0^\circ$ Then,
(A) at $\theta=30^\circ$ , the block will start sliding down the plane.
(B) the block will remain at rest on the plane up to certain $\theta$ and then will topple.
(C) at $\theta=60^\circ$ , the block will start sliding down the plane and continue do so at higher angles.
(D) at $\theta=60^\circ$ ,the block will start sliding down the plane and on increasing $\theta$,it will topple at certain $\theta$.

Answer 1

A) at $\theta=30^\circ$ , the block will start sliding down the plane