Circular motion

[chiddler]

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F = mv^2 / r ---> a = v^2 / r

So for a given mass and velocity, there is only one possible radius. I don't like this because it seems...wrong? maybe?

Is that wrong?

We can imagine speeding up or slowing down a rock on a string. Velocity can change, r is fixed.

 

[MedPR]

F = mv^2 / r ---> a = v^2 / r

So for a given mass and velocity, there is only one possible radius. I don't like this because it seems...wrong? maybe?

Is that wrong?

We can imagine speeding up or slowing down a rock on a string. Velocity can change, r is fixed.

If the string stays taught, the force will necessarily change as well.

 

[chiddler]

okeeday. ty