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Physics 24 Online
OpenStudy (anonymous):

g = R((pi X rpm)/30)^2 / 9.81 m/sec^2

OpenStudy (anonymous):

if R = 100 m

OpenStudy (wolfe8):

What is this?

OpenStudy (anonymous):

The question was ... "If inside a space ship orbiting Earth, how fast would the ship need to spin in order for a person inside to experience earth like gravity?" I was given this formula as an answer.

OpenStudy (wolfe8):

Then I think you're looking for X. g=9.8 m/s^2 Just solve for X

OpenStudy (anonymous):

My guess is Gravity = 100 m (3.14 x RPM) divided by 30)^2 divided by 9.81 m divided by sec^2

OpenStudy (anonymous):

(x) is times, as in 2 "times" 2 = 5

OpenStudy (anonymous):

no pun intended

OpenStudy (anonymous):

no the pun was intended lol

OpenStudy (anonymous):

2x2=4

OpenStudy (wolfe8):

Hmm. So you're just putting 100 and 9.8 in. Remember the square applies to the whole pi*RPM. Then solve for RPM.

OpenStudy (anonymous):

Yes I am trying to find the speed of rotation needed for earth like gravity in orbit. The question here is how to I solve for RPM?

OpenStudy (wolfe8):

Ah so you need help on the math. Well, 1) multiply both sides with 9.8 2) divide both sides with R 3) square root both sides 4 multiply both sides with 30 5) divide both sides with pi

OpenStudy (anonymous):

thanks

OpenStudy (wolfe8):

You're welcome. Did it work?

OpenStudy (anonymous):

one minute

OpenStudy (anonymous):

would i multiply 9.81 by 9.81 on the left?

OpenStudy (anonymous):

I'm guessing that was something obvious

OpenStudy (wolfe8):

Yes you do

OpenStudy (anonymous):

would I be dividing 100 into 9.81 or 9.81 into 100?

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