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An astronaut in training rides in a seat that is moved in uniform circular motion by a radial arm 5.70 meters long. If...

An astronaut in training rides in a seat that is moved in uniform circular motion by a radial arm 5.70 meters long. If her speed is 15.0 m/s, what is the centripetal force on her in "G's," where one G equals her weight on the Earth?

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Answer #1

The centripetal force is defined as,

             Fc = mv2/r

                  = mgv2/rg

Let G =mg, then the above equation becomes as,

                 Fc = [v2/rg] G

                       = (15 m/s)2/ (5.7 m)(9.8 m/s2)G

                        = (4.028)G

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