A block of mass is placed on a surface with a vertical cross section given by `y=x^3/6`. If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is:

A block of mass 'm' is placed on a rough surface with a vertical cross section of y =(x^(3))/(6) . If the coefficient of friction is 0.5 , the maximum height above the ground at which the block can be placed without slipping is .

A block of mass 1 kg is held at rest against a rough vertical surface by pushing by a force F horizontally. The coefficient of friction is 0.5. When

A block of mass m is placed on a rough horizontal surface. If minimum force to pull the block is (mg)/(2) then coefficient of friction is :

A block is released from rest from point on a rough inclined place of inclination 37^(@). The coefficient of friction is 0.5.

A spring, placed horizontally on a rough surface is compressed by a block of mass m, placed on the same surface so as to store maximum energy in the spring. If the coefficient of friction between the block and the surface is mu , the potential energy stored in the spring is

There block A B ,and C of equal mass m are placed one over the other on a frictionless surface (table) as shown in figure The coefficient of friction between any blocks A ,B and C is mu The maximum value of mass of block D so that the blocks A,B and C move without slipping over each other is

A block of mass 1 kg is placed on a truck which accelerates with acceleration 5ms^(-2) . The coefficient of static friction between the block and truck is 0.6. The frictional force acting on the block is

A block of mass m is placed at rest on an inclination theta to the horizontal.If the coefficient of friction between the block and the plane is mu , then the total force the inclined plane exerts on the block is