Four point masses are placed at four corners of a square as shown. When positions of m and 2m are interchanged, which of the following is true ?
- gravitational field strength at centre will increase
- gravitational field strength at centre will decrease
- gravitational potential at centre will remain unchanged
- gravitational potential at centre will decrease
Answer & explanation
Correct answer: option 2
On exchanging masses, potential at centre remains unchanged, but field changes.