Physics

Physics

Problem

Identify the correct expression for the speed

v

of a small satellite of mass

m

moving in a stable circular orbit of radius

r

around a planet of mass

M

. a)

v=\sqrt{\dfrac{Gm}{r}}

b)

v=\sqrt{\dfrac{2GM}{r}}

c)

v=\sqrt{\dfrac{GM}{r}}

d)

v=\sqrt{\dfrac{G(M+m)}{r}}

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