AP Physics Practice Rotation Quiz II

_____5. An object rolls along a horizontal surface with speed v. It encounters an incline and rollswithout slipping up the incline reaching a maximum height of 19v 2 /(22g). What is the rotational inertiaof the object?A. 8mr 2 /11.B. 19mr 2 /22.C. 15mr 2 /11.D. 7mr 2 /9.E. 17mr 2 /22.____6. A 2.2 kg hollow cylinder with a radius of 0.25 m is dropped onto the center of a turntable witha rotational inertia of 0.4 kg . m 2 that is rotating initially at 46 r/s, as shown in the overhead view below.What is the final angular speed of the turntable and hollow cylinder?A. 18 r/s.B. 22 r/s.C. 26 r/s.D. 30 r/s.E. 34 r/s._____7. A 3.0 kg hoop with a 1.2 m radius is attached to a 1.6 kg rod as shown below. It spins aboutan axis perpendicular to the page and through the center at 20 radians/s. What is the angularmomentum of the object? I Rod = ml 2 /12 where l is the length of the rod.____8. A 0.6 kg yo-yo with a 0.004 m axle radius is released from rest. Its moment of inertia, I = 3.2 x10 -5 kg . m2. As the string unwinds the yo-yo’s acceleration isA. 9.8 m/s 2 .B. 1.1 m/s 2 .C. 1.5 m/s 2 .D. 6.1 m/s 2 .E. 2.3 m/s 2 .____9. A 0.3 kg object rolls without slipping down a ramp inclined 25 o to the horizontal. Its rotationalinertia about its center is 6.3 x 10 -4 kg . m 2 and its radius is 0.03 m. What is its acceleration?A. 2.2 m/s 2 .B. 1.8 m/s 2 .C. 1.2 m/s 2 .D. 1.6 m/s 2 .E. 4.6 m/s 2 .