A square object of mass m is constructed of four identical uniform thin sticks, each of length

Question:

A square object of mass m is constructed of four identical uniform thin sticks, each of length L, attached together. This object is hung on a hook at its upper corner (Fig. P14.79). If it is rotated slightly to the left and then released, at what frequency will it swing back and forth?

Figure P14.79:

Hook L.