Wednesday

September 17, 2014

September 17, 2014

Posted by **Mary** on Wednesday, February 21, 2007 at 1:03pm.

Is there some magic potion I can drink to reveal where Point 3 is?

Point 3 is located at the top.

force on bottom is mv^2/r+ mg. Calculate that.

Then at the top, it is mv^2/r - mg

set that equal to the bottom force, and solve for v

- Physics HELP!!!!!!!! -
**David**, Thursday, October 11, 2012 at 2:55amWith: 2mg=mv3^2/r-mv1^2/r

V3 being the speed at the top and V1 being the speed given at the bottom

You get: V3^2=2gr+V1^2

sqrt(2*9.8*3.1+16^2)

sqrt(316.76)=17.8

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