First slide

Gravitational force and laws

Question

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

Moderate

A

Time period
B

Orbiting radius
C

Tangential velocity
D

Angular velocity

Solution

$T^{2} = \frac{4 π^{2}}{G M} r^{3} \Rightarrow$ If G is variable then time period, angular velocity and orbital radius also changes accordingly
Tangential velocity does not change

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