A thin rod of length $L$ is bent to form a semicircle. The mass of rod is $M$. What will be the gravitational potential at the centre of the circle?
A thin rod of length $L$ is bent to form a semicircle. The mass of rod is $M$. What will be the gravitational potential at the centre of the circle?
- A
$-\frac{GM}{L}$
- B
$-\frac{GM}{2 \pi L}$
- C
$-\frac{\pi GM}{2L}$
- D
$-\frac{\pi GM}{L}$
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