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# Physics/very desperate

Question
Hi   Richard,

re:  this   http://en.allexperts.com/q/Physics-1358/2012/10/distance-3.htm

I desperately need an online calculator for Pendulum length and swing time that can also calculate units of swing time converted into circular  " Swing Distance "  so that I can always quickly obtain the swing  "Radius"  and prove that;

Pendulum length  /  Radius of swing circumference  =  Acceleration of Gravity.

Do you know where I can get one made ?

This is very important.

Thanks so much,

Sharice

A simple pendulum is defined as having a small size weight as compared to its length and a small swing.  Under those conditions, T = 2(pi)(L/g)^1/2 where T is the period and L is the length (in meters).  The radius of swing circumference is the same as the pendulum length.
Beyond that, I can't help.

Physics

Volunteer

#### Richard J. Raridon

##### Expertise

I can answer most questions in undergraduate physics courses, including electricity and magnetism, atomic and nuclear, mechanics and optics.

##### Experience

I have taught undergraduate physics courses

Organizations
Sigma Xi, AAAS, SE section of APS

Education/Credentials
BA in math, MA in physics, PhD in physical chemistry

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Fellow of AAAS