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**[SOLVED] Question about Applying V^2/r with two different velocities**

## Homework Statement

I have a problem where I am using the equation V^2/r = -1g to a problem with centripetal force. Basically the question is designing my own situation where i need to have a -1g acceleration on a turn and i decided on the picture below. It is a vertical picture.

## Homework Equations

-1g = v^2/r

## The Attempt at a Solution

I tried figuring out exactly how to get the velocity but I just don't seem to see which velocity to use.

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