Rotational Motion 2

Match it! Select the correct answer from the pull down...Good luck!

Which of the following is TRUE?

The rotational inertia of an object is greater when most of the mass is located

Which will swing to and fro more often, a short pendulum or a long pendulum?

Which will have the greater acceleration rolling down an incline-- a hoop or a solid disk?

Which has greater linear speed, a horse near the outside rail of a race track or one near the inside rail?

If a skater who is spinning pulls her arms in so as to reduce her rotational inertia to half, how much will her rate of spin increase?

A 1.0 kg solid lead ball is attached to a .5 m string and swung in a circle. The ball’s speed at the end of the string is 2.5 m/s. What is the ball’s rotational inertia? (I=mr2)

Beginning from a rest position, a solid disk A, a solid ball B, and a hoop C, race down an incline. Rank them in order of finishing: winner, second place, and third place.