A block of base 10 cm*10 cm and height 15 cm is kept on an inclined plane.The co

A block of base 10 cm*10 cm and height 15 cm is kept on an inclined plane.The coeffecient of friction between them is 3^1/2. The inclination a of this inclined plane from the horizontal plane is gradually increased from 0 degree.Thena) at a=30 the block will start sliding down the plane.b) the block will remain at rest on the plane up to certain a and then it will topplec) at a=60 the block will start sliding down the plane and continue to do so at higher anglesd) at a=60 the block will start sliding down the plane and on further increasing a it will topple at certain a