- #1

Duckboy

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## Homework Statement

Rank each pendulum on the basis of its maximum speed.

http://img148.imageshack.us/img148/9674/picture3op6.png

## Homework Equations

m*g*[tex]\Delta[/tex] = [tex]1/2[/tex]*m*v^{2}

## The Attempt at a Solution

At first I thought that all the Max speeds were the same, but I was wrong.

I know that the kinetic energy is equal to the change in potential energy since I solve the first 2 parts correctly.

If I follow the equation, I know the mass will cancel out. So am I solving for v^{2}?

So if I simplify the equation is it:

v = \sqrt{2*g*\Deltah}

Then would i just apply it to all the situations?

Thanks

Sorry for the bad format for the equations.

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