Question

If you have to create artificial gravity equal to that on the Earth, how many rotations per minute will be required?

• A. $1.49rpm$
• B. $1.6rpm$
• C. $1.78rpm$
• D. None of the above

Answer 1

The correct option is A $1.49rpm$

To achieve the desired value of $g$, we are to set:

$r{\omega }^2=9.8$

or, $\omega =\sqrt{\frac{9.8}{400}}\times \frac{60}{2\pi }=$ $1.49rpm$