- #1
AHinkle
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Homework Statement
A woman with a mass of 70 Kg stands at the rim of a horizontal table having a moment of inertia of 490 kg*m^2 and a radius of 1.4 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through it's center. The woman then starts walking around the rim clockwise, as viewed from above at a constant speed of 1.7 m/s as relative to the earth, with what angular speed does the turntable rotate? answer in units of radians/s
part 2 of 2
How much work does the woman do ON THE TABLE to set it in motion. Answer in units of J.
Homework Equations
not sure... It's either the torque, and angular momentum or it's a universal gravitation problem.
The Attempt at a Solution
I'm not sure how I'm supposed to approach this problem. We have just started talking about Universal gravitation and the Cavendish experiment. It never says anything about her physically exerting a force on, or grabbing the table. We also just finished talking about angular momentum.
What approach do you guys think they're getting at? thanks...