Friction that acts when one object rolls across the other

A solid cylinder and a solid sphere, both having the same mass and radius, are released from a rough inclined plane of inclination theta one by one. They roll on the inclined plane without slipping. The force of friction that acts

Two resistance connected in parallel across a cell of negligible internal resistance, use 4.5 times the power that they would use, when in series across the same cell. If one of the resistance is 8ohm, the other is:-

The conduction of heat can take place within an object or between any two objects in contact with each other. It stops when the objects obtain the same temperature

Force between two objects of equal masses is F, If 25 % mass of one object is transferred to the other object, then find the new force.

Write down the type of friction for each of the following . A. (object is not moving ) ____ B.(object is moving)____ C.(objects is moving ) _____

A solid sphere, a ring and a disc all having same mass and radius are placed at the top of an incline and released. The friction coefficient between the objects and the incline are same but not sufficient to allow pure rolling. Least time will be taken in reaching the bottom by

A load of mass m is attached to the end of a string wound on a cylinder of mass M and radius R . The string passes round a pulley. a. Find the acceleration of the cylinder M when it rolls. b. If the coefficient of friction is mu . Find the accelerative of the cylinder when it slips and rolls. c. Find the minimum value of coefficient of friction for which the cylinder rolls always

A wheel of radius R , mass m and moment of inertia I is pulled along a horizontal surface by application of force F to as rope unwinding from the axel of radius, r as shown in figure. Friction is sufficient for pure rolling of the wheel. a. What is the linear acceleration of the wheel? b. Calculate the frictional force that acts on the wheel.

If an external force and the frictional force acting on a body cancel each other and keep the body at rest, the frictional force is

A uniform disc is acted by two equal forces of magnitude F . One of them, acts tangentially to the disc, while other one is acting at the central point of the disc. The friction between disc surface and ground surface in nF . If r be the radius of the disc, then the value of n would be (in N )