# Physics

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c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?

d) A mass spins with a tangential speed of 1.2 m/s on the end of a string which is 0.75m long. What is the period of the rotation in seconds?

• Physics -

These problems are not hard. You need to show your work, or evidence of thought about the problem.

Start (c) by converting rpm to radians per second

• Physics -

I was not taught how to do this

• Physics -

We went over this in my physics class yesturday, and I understand most of the concepts of this section of the book, but the examples we were given confuse me. I can find no connection between the numbers of tangential speed and RPM. :(

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