Physics

Problem

6. A satellite moves in a stable circular orbit with speed

v_{\mathrm{o}}

at a distance

R

from the center of a planet. For this satellite to move in a stable circular orbit a distance

2 R

from the center of the planet, the speed of the satellite must be (A)

\frac{v_{0}}{2}

(B)

\frac{v_{0}}{\sqrt{2}}

(C)

v_{o}

(D)

\sqrt{2 v_{0}}

(E)

2 v_{\mathrm{o}}

(A)

\frac{v_{0}}{2}

(B)

\frac{v_{0}}{\sqrt{2}}

(C)

v_{o}

(D)

\sqrt{2 v_{0}}

(E)

2 v_{\mathrm{o}}