Question

The correct graph representing the variation of total energy $(E_T)$, kinetic energy $(E_K)$ and potential energy $(E_p)$ of a satellite with its distance $(r)$ from the centre of earth is

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

$E_{T}=-\frac{GM\,m}{2r};$
Thus $E_{T}$ increases with increase in $r$
$E_{k}=\frac{GM\,m}{2r}$ ; Thus $E_{k}$ decreases with increase in $r$
$E_{p}=\frac{-GM \,m}{r}$ ; Thus $E_{p}$ increases with increase in $r$