What is the period of a pendulum formed by pivoting a metre stick so that is free to rotate about a horizontal axis passing through the `75 cm` mark?

What is torque due to gravity about an axis passing through C.M.?

A metallic rod of mass m length R is pivoted at O. It is free to rotate about a horizontal axis passing through O . An inward magnetic field is applied as shown in the figure. Find the ratio of maximum electric field inside the metallic rod to the applied magnetic field induction .

A metallic rod of mass m length R is pivoted at O. It is free to rotate about a horizontal axis passing through O . An inward magnetic field is applied as shown in the figure. Find the ratio of maximum electric field inside the metallic rod to the applied magnetic field induction .

A massless stick of length L is hinged at one end and a mass m attached to its other end. The stick is free to rotate in vertical plane about a fixed horizontal axis passing through frictionless hinge. The stick is held in a horizontal position. At what distance x from the hinge should a second mass M = m be attached to the stick, so that stick falls as fast as possible when released from rest

A massless stick of length L is hinged at one end and a mass m attached to its other end. The stick is free to rotate in vertical plane about a fixed horizontal axis passing through frictionless hinge. The stick is held in a horizontal position. At what distance x from the hinge should a second mass M = m be attached to the stick, so that stick falls as fast as possible when released from rest

A solid cube of side l is made to oscillate about a horizontal axis passing through one of its edges. Its time period will be