7.2.63. [Level 3] Computational The illustrated body is a solid right triangle with a semicircular rod welded to it at A and C. At the midspan of the rod is a lumped mass m. The triangular body has a mass of 4 kg, the rod has a linear density of 2 kg/m, L = 1.2 m, and m = 4 kg. Defining the current position as 0 = 0, rotate the body 90 degrees counterclockwise and then release it from that position. Plot versus t for 5 s. 45° 45° m