Two particle of mass m each are fixed at the opposite ends of a massless rod of length 5 m which is oriented vertically on a smooth horizontal surface and released . find the displacement of the lower mass on the ground when the rod makes an angle of 37ᵒ with the vertical.
a. 1. 5 m
b. 2 m
c. 2. 5 m
d. 3. 5 m