A uniform disk of mass 2 kg and radius 0.45 m rolls without slipping down an inclined plane of length 35 m and slope 30". The disk starts from rest at the top of the incline. Find the angular acceleration of the disk. O 8.5rad/s2 0 9.23rad/s2 0 7.27rad/s2 0 4.72rad/s2 0 6.grad/s2 A 32.0 kg wheel, essentially a thin hoop with radius 1.2 m. is rotating at 280 rpm. It must be brought to a stop in 15.0 s. What is the required average power? O 2500W O 3279W O 1325W 1320W O 1370W A block of mass, 9 kg. collides with a spring with a spring constant of 100 N/ m at a speed of 10 m/'s compressing the spring. When the block stops moving, how far is the spring compressed? O 2.6 m 0 3m O 72 m O 75 m