A T-shaped rigid object that is made by rigidly joining two identical, thin, uniform rods, each of mass m = 500 grams and length L = 40 cm. The object is suspended from a frictionless horizontal axle at A and undergoes simple harmonic motion (SHM) in the plane of this page (the vertical plane). A) [3 marks] Determine an expression for the moment of inertia of the T-shaped object about the axle at A, and evaluate it for the values provided. B) [2 marks] Determine an expression for the frequency in Hz of the SHM and evaluate it for the values provided