A body of mass m starts sliding down an incline of `30^(@)` from rest. The body comes to rest just when it reaches the bottom. If the top half of the plane is perfectly smooth and the lower half is rough, find the force of friction :

The upper portion of an inclined plane of inclination a is smooth and the lower portion is rough. A partical slide down from rest the top and just comes to rest at the foot . If the ratio of smooth length to rough length is m:n , find the coefficient of friction .

The upper portion of an inclined plane of inclination a is smooth and the lower portion is rough. A partical slide down from rest the top and just comes to rest at the foot . If the ratio of smooth length to rough length is m:n , find the coefficient of friction .

The upper portion of an inclined plane of inclination alpha is smooth and the lower portion is rough. A particle slide down from rest from the top and just comes to rest at the foot. If the ratio of the smooth length to rough length is m:n, the coefficient of friction is

The upper portion of an inclined plane of inclination alpha is smooth and the lower portion is rough. A particle slides down from rest from the top and just comesto rest at the foot.If the ratio ofthe smooth length to rough length is w : find the coefficient of friction.

A body of mass m slides down a rough plane of inclination alpha . If mu is the coefficient of friction, then acceleration of the body will be

A body of mass m slides down a rough plane of inclination alpha . If mu is the coefficient of friction, then acceleration of the body will be

A block of mass 5.0kg slides down from the top of an inclined plane of length 3m . The first 1m of the plane is smooth and the next 2m is rough. The block is released from rest and again comes to rest at the bottom of the plane. If the plane is inclined at 30^@ with the horizontal, find the coefficient of friction on the rough portion.

A block of mass 5.0kg slides down from the top of an inclined plane of length 3m . The first 1m of the plane is smooth and the next 2m is rough. The block is released from rest and again comes to rest at the bottom of the plane. If the plane is inclined at 30^@ with the horizontal, find the coefficient of friction on the rough portion.