Suppose your writing desk is tilted a little .A book kept on it starts sliding down. Show the direction of frictional force acting on it.

A cylinder rolls up an inclined plane, reaches some height, and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are :

Write an expression for the work done when a force is acting on an object in the direction of its displacement.

A force of 750 N is applied to a block of 100 kg to prevent it from sliding down an inclined plane of 30^(@) inclination. If coefficients of static and kinetic friction are 0.4 and 0.2, the frictional force acting is :

A body of mass 'm' is kept on the horizontal floor and it is pushed in the horizontal direction with a force of 10N continuously, so that it moves stadily. (a) Draw FBD (a diagram showing all the foreces acting on the body aty a point of time) (b) What is the value of friction ?

At time t = Os a particle starts moving along the x-direction. If its kinetic energy increases uniformly with time Y', the net force acting on it must be proportional to :

A block of mass 'm' is connected to another block of mass 'M' by a spring (massless) of spring constant 'k'. The blocks are kept on a smooth horizontal plane. Initially the blocks are at rest and the spring is unstretched. Then a constant force 'F' starts acting on the block of mass 'M' to pull it. Find the force on the block of mass 'm'.

A truck starts from rest and rolls down a hill with constant acceleration . It travels a distance of 400 m in 20 s . Find its acceleration. Find the force acting on it if its mass is 7 metric tonners (Hint 1metric tone - 1000 kg)