- #1

Rikudo

- 120

- 26

- Homework Statement
- -

- Relevant Equations
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https://www.physicsforums.com/threa...f-a-translating-and-rotating-pancake.1005990/

So,I think I posted this in the wrong place. So, I will move it to here.

Here, in post #6, it is stated that ##\int R dm = M R##. As far as I know, R change from time to time and it is not constant. Hence, isn't it incorrect to say that ##\int R dm = M R##? Or, are there any techniques that are skipped?

So,I think I posted this in the wrong place. So, I will move it to here.

Here, in post #6, it is stated that ##\int R dm = M R##. As far as I know, R change from time to time and it is not constant. Hence, isn't it incorrect to say that ##\int R dm = M R##? Or, are there any techniques that are skipped?