A bar of mass m, is placed on a plank UI mub rests on a smooth horizontal plane (Fig. 6-24a). T ficient of friction between the surfaces of the bar plank is equal to µ. The plank is subjected to the I tal force F depending on time t as F= at (a is a cc A bar of m1 DF= at Figure 6-24 (a) A bar kept on a plank which is subje a horizontal force. Find (a) the moment of time t, at which the plan sliding from under the bar and (b) the acceleratio and that of plank a, during motion. bar

A bar of mass m, is placed on a plank UI mub rests on a smooth horizontal plane (Fig. 6-24a). T ficient of friction between the surfaces of the bar plank is equal to µ. The plank is subjected to the I tal force F depending on time t as F= at (a is a cc A bar of m1 DF= at Figure 6-24 (a) A bar kept on a plank which is subje a horizontal force. Find (a) the moment of time t, at which the plan sliding from under the bar and (b) the acceleratio and that of plank a, during motion. bar