A wooden cylinder and a wooden hoop have the same mass and radius. They are released simultaneously and roll down a ramp without slipping. Which will reach the bottom first? Explain.

you will release a solid disk a hollow ring a solid sphere and a hollow sphere down an incline. Which arrives at the bottom first? Which arrives at the bottom last? Which has the largest and which has the smallest moment of inertia?

What is the difference between the angular velocity of a second hand of a wrist watch compared to the second hand of a large clock tower's second hand? What about both vs linear velocity? Explain both answers

Angular Acceleration and Torque. Question #3

18) Consider an adult and a child riding their bikes. The adult's bicycle has tires with an outer diameter of 700 centimeters. The child's bicycle has tires with an outer diameter of 350 centimeters. The adult bicycle's tires are rotating with an angular velocity of 4.0 radians per second. If the child cyclist is traveling along the road at the same speed as the adult, then what angular velocity must the child's bicycle's tires be rotating at? [Assume the tires are rotating without slipping as the cyclists ride]. A) 1.0 radians second per B) 2.0 radians per second C) 4.0 radians per second D) 8.0 radians per second E) 16.0 radians per second abnoose e G

Question 13 An ice skater starts to spin with an angular velocity of 2 rotations per second, when she moves her arms close together her angular inertia goes down by a factor of 5, how fast would she rotate then? O 2/5 rotations per second O 5 rotations per second O 5/2 rotations per second O 10 rotations per second Question 14 What is the tangential velocity of a ladybug that is 20 cm from the center of a turntable rotating at 5 radians per second? Hint: Watch the units O 4 m/s O 1 m/s O 100 m/s O 0.04 m/s Question 15 What is the magnitude of the centripetal force keeping the ladybug of the above problem in circular motion? Use 2x10-5 kg for her mass. Hint: Watch the units O 1x104 N O 1x107 N 2x10 3 N O 1x105 N

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Rank the following in order of increasing moments of inertia about the midpoint of the rod. m R 1 m 2m R/2 2 m m/2 2R 3 m/2

3) Timmy (m, = 30.0 kg) is standing at the center of a merry-go-round that is spinning at 5.00 rad/s. The merry-go-round can be modeled as a disk with a diameter of 4.00 m and a mass of 50.0 kg, rotating on a frictionless axle though its center. He then walks to the edge of the merry-go-round. What is the new angular speed of the merry-go-round?

Which will cause a greater increase in the angular velocity of a disk: doubling the torque applied or halving the radius at which the torque is applied? Explain.