Question

If Gravitational constant is decreasing in time, what will remain unchanged in case of a satellite orbiting around earth

• A. Time period
• B. Orbiting radius
• C. Tangential velocity
• D. Angular velocity

Answer 1

Answer: (C)

Tangential velocity

Answer 2

$T ^ { 2 } = \frac { 4 \pi ^ { 2 } } { G M } r ^ { 3 }$. If G is variable then time period, angular velocity and orbital radius also changes accordingly.