9. A ladybug sits at the outer edg between her and the axis twice each second. T

Question

9. A ladybug sits at the outer edg between her and the axis twice each second. The gentleman bug's angular speed is e of a merry-go-round, and a gentleman bug sits halfway of rotation. The merry-go-round makes a complete revolution a. half the ladybug's. b. the same as the ladybug's. c. twice the ladybug's. d. impossible to determine e. the same as his linear speed 10. A small ball is rotating in a horizontal circular path on a massless, rigid wire around a vertical post. The moment of inertia of the center of mass of the ball about the axis of rotation is 8.6 kg m2. The ball's mass is 6.0 kg. What happens to the moment of inertia if the ball is moved to a radius that is twice as large? a It stays the same b. It quadruples c. It doubles d. It halves e. You can't tell

Explanation / Answer

9.(b) Angular speed is same for both .

10. (b) Moment of inertia = mr^2

So for twice the radius , moment of inertia will be 4 times

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