4. For a simple pendulum, the restoring "force" is the torque TIME (S) due to gravity, myL. Here m is the mass of the pendulum, g is the acceleration due to gravity, and L is the length of the pendulum. The "inertia" is the rotational inertia; ml What is the expected period T of a simple pendulum? OB.2L/mp OD. MTVW/L O E. none of thewe