Solved

Planets a and B Are Uniform Solid Spheres That Rotate ω\omega

Question 49

Multiple Choice

Planets A and B are uniform solid spheres that rotate at a constant speed about axes through their centers. Although B has twice the mass and three times the radius of A, each planet has the same rotational kinetic energy. What is the ratio ω\omega B/ ω\omega A of their angular speeds?


A) 0.055
B) 0.093
C) 0.165
D) 0.191
E) 0.236

Correct Answer:

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