Problem Set 8 - Rotational Motion Direction: Solve each of the given problems. Show all calculations - data, unit conversion, equation, substitution with units, computation, and final answer. Problem 1 If a rotating object has a uniform angular acceleration of 3.45 rad/s2, determine the time it takes it to speed up from 15 rad/s to 33.3 rad/s. Equation: w = wn+ at Problem 2 Calculate the angle through which an object turns in 5.26s if its initial angular speed is 12.5 rad/s and constant angular acceleration is 3.41 rad/s?. Equation: 0 = wot that Problem 3 The figure shows the Achilles tendon of a person's foot. Calculate the magnitude of the torque that a 720-N force produces about the ankle joint. Equation: T= rFsine Ankle joint 3.5 cm Problem 4 A tangential force of 208 N is applied to the surface of a ball that is connected to a 2-m string while it is undergoing an angular acceleration of 0.6 rad/s. Calculate the ball's moment of inertia. Equations: T=rF T