A aprtical moves on a rough horizontal ground with same initial velocity say `v_(0)`. If `(3//4)th` of its kinetic energy is lost in friction in time `t_(0)` , then coefficient of friction between the partical and the ground is:

A particle moves move on the rough horizontal ground with some initial velocity V_(0) . If (3)/(4) of its kinetic enegry lost due to friction in time t_(0) . The coefficient of friction between the particle and the ground is.

A particle moves move on the rough horizontal ground with some initial velocity V_(0) . If (3)/(4) of its kinetic enegry lost due to friction in time t_(0) . The coefficient of friction between the particle and the ground is.

A block begins to move on a rough horizontal surface with an initial velocity u. If it loses of its initial kinetic energy in time t, the coefficient of kinetic friction between the block and the surface is

A block starts moving up an inclined plane of inclination 30^@ with an initial velocity of v_0 . It comes back to its initial position with velocity (v_0)/(2) . The value of the coefficient of kinetic friction between the block and the inclined plane is close to I/(1000) , The nearest integer to I is ____________ .

A block starts moving up an inclined plane of inclination 30^@ with an initial velocity of v_0 . It comes back to its initial position with velocity (v_0)/(2) . The value of the coefficient of kinetic friction between the block and the inclined plane is close to I/(1000) , The nearest integer to I is ____________ .

Asseration : A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a ceratin distance. The surface is now tilted to an angle of 30^@ with the horizontal and same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is small than the first situation. Reason : The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.

Asseration : A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a ceratin distance. The surface is now tilted to an angle of 30^@ with the horizontal and same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is small than the first situation. Reason : The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.