Find an expression for the work done against friction when a body is made to slide down an inclined plane?

Find an expression for the work done against friction when a body is made to slide up an inclined plane.

Find an expression for the work done in sliding a body over a rough horizontal surface.

The work done by a body against friction always results in

Derive an expression for the work done when a body slides down a rough inclined plane.

The sign of work done by a force is important to understant. State carefully if the following quantities are positive or negative. (a) Work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket. (b) Work done by the gravitational force in the above case. (c ) Work done by friction on a body sliding down an inclined plane. (d) Work done by an applied froce on a body moving on a rough horizontal plane with uniform velocity. (e ) Work done by the resistive force of air on a vibrating pendulum in bringing it to rest.

Assertion : The work done in bringing a body down from the top to the base along a frictionless inclined plane is the same as the work done in bringing it down along the vertical side . Reason : The gravitational force on the body along the inclined plane is the same as that along the vertical side.

Obtain an expression for the acceleration of a body sliding down a rough inclined plane.

A block of mass 2 kg, slides down a rough inclined plane of length I rn and inclination 60°. The coefficient ofkinetic friction is 0.4. What is the work done against friction, when it slides from the top to the bottom?

A body is sliding down a rough inclined plane The coefficient of friction between the body and the plane is 0.5 .The ratio of the net force required for the body to slide down and the normal reaction on the body is 1:2 Then the angle of the inclined plane is

Starting from rest , a body slides down at 45^(@) inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is