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March 4, 2015

March 4, 2015

Posted by **jennifer** on Friday, November 3, 2006 at 4:52pm.

I will be happy to critique your thinking or work on this. Angular freq comes as a standard formula, and the other items for energy concepts (PEmax= KEmax)

i know for part a the answer is 3.547

rad/s but i don't know how to do part b & c

please someone tell me how to do part b & c i know how to do part a only

From geometry, figure how high from the base is the bob when it starts. Its potential energy is mgh where h is the vertical height. At thebottom, the KE has to equal that starting energy.

1/2 mv^=mgh

you can calculate the velocity.

but how do you do part b i still don't get it

thanks for the help

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