- #1

Sucks@Physics

- 76

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I thought the formula was v^2/r =ac

But when I do that i get 1.4m/s^2 and it is not the right answer. Can someone tell me what I'm doing wrong, or if I've used the wrong formula? Thanks

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- Thread starter Sucks@Physics
- Start date

- #1

Sucks@Physics

- 76

- 0

I thought the formula was v^2/r =ac

But when I do that i get 1.4m/s^2 and it is not the right answer. Can someone tell me what I'm doing wrong, or if I've used the wrong formula? Thanks

- #2

Doc Al

Mentor

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Realize that the diameter is given in cm. Change to meters.

- #3

Sucks@Physics

- 76

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I did. (7m/s)^2/.35m = 140m/s

- #4

Sucks@Physics

- 76

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Sorry that was supposed to be 1.4x10^2 in the first post

- #5

Doc Al

Mentor

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I don't see anything wrong with that answer, assuming you gave proper units.Sorry that was supposed to be 1.4x10^2 in the first post

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