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Urgent help needed, please Circular motion

  • Thread starter owura143
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  • #1
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Urgent help needed, please!!!! Circular motion

Suppose the surface (radius = r) of the space station is rotating at 42.7 m/s. What must be the value of r for the astronauts to weigh one-half of their earth weight?


My soln: Let // represent square root

V = // (GMe/r)

I divided Me by 2 and made r the subject

r = GMe/V^2

but i got the anser wrong
 

Answers and Replies

  • #2
Doc Al
Mentor
44,892
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I presume the problem is talking about the artificial gravity created by a rotating space station--not real gravity. Hint: Consider centripetal acceleration.
 

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