- #1

rlmurra2

- 19

- 0

I don't know what I'm doing wrong, I am using the formula T^2=(4(pi)^2/GM)r^3.......and I am not coming up w/ the right answer, I have like 5 choices to choose from and theire all x10^6...

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- Thread starter rlmurra2
- Start date

- #1

rlmurra2

- 19

- 0

I don't know what I'm doing wrong, I am using the formula T^2=(4(pi)^2/GM)r^3.......and I am not coming up w/ the right answer, I have like 5 choices to choose from and theire all x10^6...

- #2

Astronuc

Staff Emeritus

Science Advisor

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Remember the angular frequency, [itex]\omega[/itex] = 2[itex]\pi[/itex]/T, where T is the period.

And tangential speed, v = [itex]\omega[/itex]r

- #3

Chi Meson

Science Advisor

Homework Helper

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did you convert the period (T) to seconds?

- #4

rlmurra2

- 19

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I tried converting it to seconds and leaving it in minutes...still the answer is way off.

- #5

Doc Al

Mentor

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That's an awfully tiny planet. Are you sure of that number?rlmurra2 said:The mass of the planet is known to be 5.0 x 10^4 kg.

- #6

rlmurra2

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- #7

Doc Al

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- #8

rlmurra2

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- #9

Doc Al

Mentor

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- #10

rlmurra2

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- #11

Chi Meson

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