A block of mass 2 kg is placed on a plane inclined at an angle 30^(@) with the horizontal. Coefficient of friction between the block and the incline is (sqrt(3))/(2). (i) Show that the block will not slide down the plane due to its weight alone. (ii) What force is needed to make the block slide down the incline without any acceleration? (iii) What force will be required to pull the block up along the incline without any acceleration?

A block of mass 2 kg is placed on a plane inclined at an angle 30^(@)

1.	A block of mass 2 kg is placed on a plane inclined at an angle 30^(@) with the horizontal. Coefficient of friction between the block and the incline is (sqrt(3))/(2). (i) Show that the block will not slide down the plane due to its weight alone. (ii) What force is needed to make the block slide down the incline without any acceleration? (iii) What force will be required to pull the block up along the incline without any acceleration?
Answer» ANSWER :(II) 10.98 N; (III) 30.58 N