Friction between blocks

Acceleration of block A varies with time as shown in figure the value of coefficient of kinetic friction between block A and B is

The coefficient of friction between block of mass m and 2m is mu=2tantheta . There is no friction between block of mass 2 m and inclined plane. The maximum amplitude of the two block system for which there is no relative motion between both the blocks is

Coefficient of friction between pulley and light string is mu_(1) . Calculate minimum coefficient of friction between block A and ground such that system can be in equibrium.

A block of mass m is at rest relative to the stationary wedge of mass M. The coefficient of friction between block and wedge is mu . The wedge is now pulled horizontally with acceleration a as shown in figure. Then the minimum magnitude of a for the friction between block and wedge to be zero is:

A block of mass m sides down an inclined right angled trough .If the coefficient of friction between block and the trough is mu_(k) acceleration of the block down the plane is

The ratio of acceleration of blocks A placed on smooth incline with block B placed on rough incline is 2:1 . The coefficient of kinetic friction between block B and incline is

A block of mass "5kg" is placed on a wedge having inclination of 37^(@) with the horizontal. Coefficient of friction between block and wedge is 0.8. Then select the correct statement.

A block of mass ""5kg"" is placed on a wedge having inclination of 37^(@) with the horizontal coeffecient of friction between block and wedge is 0.8 . Then select the correct statement:

A block of mass 2 kg is at rest on a floor . The coefficient of static friction between block and the floor is 0.54. A horizonatl force of 2.8 N is applied to the block . What should be the frictional force between the block and the floor ? ( take , g = 10 m//s^(2) )