I. A thin cylindrical wheel of radius r = 40cm is allowed to spin on a frictionless axle. The wheel, which is initially at rest, has a tangential force applied at right angles to its radius of magnitude 50N as shown in Fig. The wheel has a moment of inertia equal to 20 kg m2 . Determine the angular velocity of the wheel after 3s. a. 3 rad/s b. 4.5 rad/s

c. 6 rad/s

d. 7.5 rad/s