A 10 kg mass is resting on a horizontal surface and horizontal force of 80N is applied. If `mu = 0.2`, the ratio of acceleration without and with frication is `(g = 10 ms)^(2)`

A block of mass 2 kg rests on a horizontal surface. If a horizontal force of 5 N is applied on the block, the frictional force on it is ("take", u_(k)=0.4, mu_(s)=0.5)

A block of mass 2 kg rests on a horizontal surface. If a horizontal force of 5 N is applied on the block, the frictional force on it is ("take", u_(k)=0.4, mu_(s)=0.5)

A 4 kg mass is resting on a horizontal surface. For this surface mu_s = 0.6 & mu_(k) = 0.2 . Force required to move the body with 5ms^(-2) acceleration is (g = 10ms^(-2) )

Two blocks of masses 3kg and 2kg are placed beside each other in contact with each other on a rough horizontal surface. A horizontal force of 20N is applied on 3kg. The coefficient of friction between blocks and the surface is 0.1 and g = 10ms^(-2) . The force of contact between the two blocks is

A horizontal force of 150N produces an acceleration of 2m/s2 in a body placed on a 6 horizontal surface. A horizontal force of 200N produces an acceleration of 3m//s^2 . The mass of the body and coefficient of kinetic friction are (g = 10 ms^(-2) )