. A 1 kg block B rests on a bracket A of same mass as shown in figure


A 1 kg block B rests on a bracket A of same mass as shown in figure. Constant forces F1 = 20N and F2 = 8N start acting at time t = 0. The distance of block B from pulley is 50 m at t = 0. Determine the time (in s) when block B reaches the pulley

Constant forces

Best Answer

The acceleration of the bracket =The acceleration of the bracket

            Drawing the F.B.D. of the block B the F.B.D.

            The acceleration of the block with respect to bracket = bracket

            Using, the kinematics of uniformly accelerated motion,

                    the kinematics of uniformly accelerated motion

 

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