A body is struck to the front part of the truck. The coefficient of frction between the body and is `mu`. The minimum acceleration with which the truck should travel so that the body does not fall down is .

A body is in contact with the vertical front part of the truck. The coefficient of friction between the body and the truck is mu . The minimum acceleration with which the truck should travel so that the body does not fall down is

A body moves along a circular path of radius 5m. The coefficient of friction between the surface of the path and body is 0.5. The angular velocity is radian s_1 with which the body should move so that it does not leave the path is (g= 10ms^(-2) )

A body moves along a circular path of radius 5m . The coefficient of friction between the surface of the path and the body is 0.5 . The angular velocity in rad//s with which the body should move so that it does not leave the path is (g-10m//s^(-2))