" If the bar is uniform and horizontal weighing "500N" .How large must "W" be if "T_(1)" and "T_(2)" are to be equal? "

In Fig, the bar is uniform and weighing 500 N . How large must W be if T_(1) and T_(2) are to be equal?

In Fig, the bar is uniform and weighing 500 N . How large must W be if T_(1) and T_(2) are to be equal?

In figure the bar is uniform and weighing 500 N. How much must be the weight of the block (in N) be if T_(1) and T_(2) are to be equal ?

A train is at rest. It accelerates for a time t_(1) at a uniform rate alpha and then comes to rest under a uniform retardation rate beta for time t_(2) . The ratio t_(1)//t_(2) is equal to

A plank of mass m_1 with a bar of mass m_2 placed on it lies on a smooth horizontal plane. A horizontal force growing with time t as F^'=at (a is constant) is applied to the bar. Find how the accelerations of the plank w_1 and of the bar w_2 depend on t, if the coefficient of friction between the plank and the bar is equal to k. Draw the approximate plots of these dependences.