A uniform bar with a mass of m = [m] kg and a length of L =…
A uniform bar with a mass of m = kg and a length of L = m is rotating about a vertical axis fixed at its left end. The figure shows the tangential velocity of a point located at a distance of 1/2 L from the rotation axis. t1 = 0, t2 = 2 s, t3 = 5 s, v1 = 5 m/s, v2 = 10 m/s, v3 = 15 m/s, and v4 = 20 m/s. Determine the rotational kinetic energy of the bar at time t = 3 s. Express your answer in joules (J).