question archive Ron stands on the (very small) planet Tinious, using magnetic boots to hold him on the ground
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Ron stands on the (very small) planet Tinious, using magnetic boots to hold him on the ground. He decides to go for a run around the planet, which has a radius of 650 m. If Ron's mass is 72 kg and he runs at 6.2 m/s, what is the planet's resulting angular velocity? Treat the planet as a uniform spherical solid with mass density 5900kg/m^3 and moment of inertia I=2/5MR^2.
. 2.5×10^−13rad/s
b. 5.5×10^−11rad/s
c. 1.6×10^−10rad/s
d. 2.9×10^−4rad/s