1. | \(-\frac{8}{3}{G}\) | 2. | \(-\frac{4}{3} {G}\) |
3. | \(-4 {G}\) | 4. | \(-{G}\) |
Two heavy spheres each of mass \(100\) kg and radius \(0.10\) m are placed \(1.0\) m apart on a horizontal table. What is the gravitational potential at the midpoint of the line joining the centres of the spheres?
1. | \(2.67\times10^{-8}\) J kg–1 | 2. | \(0\) |
3. | \(6.67\times10^{-9}\) J kg–1 | 4. | \(3.71\times10^{-8}\) J kg–1 |