A thin uniform heavy rod of length l hangs from a horizontal axis passing through one end. The initial angular velocity `omega` that must be imparted to it to rotate it through `90^(@)` is :

A thin uniform rod of length l and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its centre of mass rises to a maximum height of

A thin uniform rod of length l and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its centre of mass rises to a maximum height of -

A thin uniform rod of length l and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its cenre of mass rises to a maximum height of :

A thin uniform rod of length l and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its centre of mass rises to a maximum height of -

A thin uniform rod length 1 and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its centre of mass rises to maximum height of ……