Question

If the universal gravitational constant decreases uniformly with time, then a satellite in orbit will still maintain its

• A. weight
• B. tangential speed
• C. period of revolution
• D. angular momentum

Answer 1

The correct option is D angular momentum

If the Gravitational constant is decreasing then the force between the satellite and the planet will also decrease, thereby decreasing its weight.
The tangential speed and the time period also change when G changes.
But as no external force is acting on the system the angular momentum remains conserved.