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
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
$U_A = U_B = 0$
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