Four thin rods of length L = 1.0 m each are joined to form a square ABCD. The opposite vertices of the square are joined by mass less rods AC and BD. This square frame is mounted on a horizontal axis through its centre so that the frame can rotate freely in the vertical plane. Masses of rods AB and BC are m = 2kg each and the rod AD and DC have mass M = 4kg each. A monkey of mass m_(0) = 12 kg is at rest on the horizontal rod AD and keeps the system in equilibrium. The monkey takes a sudden jump and rises to a height H from its initial position. Calculate minimum value of H so that the square frame is able to complete a rotation about its central axis. Assume no further contact between monkey and the frame.

Four thin rods of length L = 1.0 m each are joined to form a square AB

1.	Four thin rods of length L = 1.0 m each are joined to form a square ABCD. The opposite vertices of the square are joined by mass less rods AC and BD. This square frame is mounted on a horizontal axis through its centre so that the frame can rotate freely in the vertical plane. Masses of rods AB and BC are m = 2kg each and the rod AD and DC have mass M = 4kg each. A monkey of mass m_(0) = 12 kg is at rest on the horizontal rod AD and keeps the system in equilibrium. The monkey takes a sudden jump and rises to a height H from its initial position. Calculate minimum value of H so that the square frame is able to complete a rotation about its central axis. Assume no further contact between monkey and the frame.
Answer» ANSWER :`4 (SQRT2 - 1) m`