a uniform-density wheel of mass 11 kg and radius 0.41 m rotates on a low-friction axle. starting from rest, a string wrapped around the edge exerts a constant force of 15 n for 0.84 s. (a) What is the final angular speed?(a) ωf = radians/s(b) What was the average angular speed?ωaverage = radians/s(c) Through how big an angle did the wheel turn?θ = radians(d) How much string came off the wheel?d = m