How much the acceleration parallel to the surface of slope for a rolling body?

Write the equation of friction force parallel to the surface of slope for rolling body.

Little more for rolling body :

A solid sphere rolls without slipping on an inclined plane of angle theta . Find its linear acceleration in the direction parallel to the surface of the inclined plane.

A hollow cylinder rolls (about its geometrical axis) without slipping on an inclined plane of angle theta . Find its linear acceleration in the direction parallel to the surface of the inclined plane.

Assertion: When a force vecF attempts to slide a body along a surface, a frictional force parallel to the surface and directed so as to oppose the sliding, is exerted on the body by the surface. Reason: It is due to the bonding between the body and the surface.

Assertion: Frictional force is the component of contact force parallel to the surface. Reason: Friction force always opposes the motion of a body.

When a body float on the surface of liquid ?

Find the free-fall acceleration of an object on the surface of the moon, if the radius of the moon and its mass are 1740 km and 7.4 xx 10^(22) kg respectively. Compare this value with free fall acceleration of a body on the surface of the earth. (AS_(1))