The masses $m$ in fig. $(A)$ and $(B)$ are identical. The gravitational potential energy in the two cases are $U_A$ and $U_B$. Then

- A
$U_A = U_B \neq 0$

- B
$U_A < U_B$

- C
$U_A > U_B$

- D
$U_A = U_B = 0$

A stationary object is released from a point $P$ at a distance $3 R$ from the centre of the moon which has radius $R$ and mass $M$. Which of the following gives the speed of the object on hitting the moon?

For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is

- [AIPMT 2005]

Potential energy of a satellite having mass $‘m’$ and rotating at a height of $6.4 \times {10^6}\,m$ from the earth surface is

- [AIIMS 2000]

A body of mass ($2 {M}$) splits into four masses $\{{m}, {M}-{m}, {m}, {M}-{m}\}$, which are rearranged to form a square as shown in the figure. The ratio of $\frac{{M}}{{m}}$ for which, the gravitational potential energy of the system becomes maximum is ${x}: 1$. The value of $x$ is ..... .

- [JEE MAIN 2021]

An earth satellite is moved from one stable circular orbit to a further stable circular orbit, which one of the following quantities increase