physics

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an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

• physics -

5g>v^2/r

5g>RPM^2 * 1/3660 * r

solve for RPM

• physics -

42.77 RPM

• physics -

I did what Bob did and got 134 rpm, which is wrong and crazy fast, but Jay's answer is only twice what the answer should be. What did you do?

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