Which of the following gives the total mechanical energy per unit mass of a satellite…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Which of the following gives the total mechanical energy per unit mass

E/m

of a satellite moving in a circular orbit of radius

r

around Earth (mass

M

, gravitational constant

G

)? (a)

\dfrac{GM}{2r}

(b)

-\dfrac{GM}{r}

(c)

-\dfrac{GM}{2r}

(d)

-\dfrac{3GM}{4r}