Physics · GRAVITATION

Three identical point masses, each of mass \( m \), are placed at the vertices of an equilateral triangle of side length \( 1\text{ m} \). A point mass \( 2m \) is placed at the centroid of the triangle. What is the net gravitational force experienced by the mass at the centroid?

1. A
   Zero
2. B
   \( 6Gm^2 \)
3. C
   \( \frac{4}{\sqrt{3}} Gm^2 \)
4. D
   \( 2Gm^2 \)