Question

Two satellites have circular orbits with the same radius. One satellite is twice mass of the other. Which has a higher speed?

Answer 1

The satellite which has greater mass will have greater orbital speed

As the satellite 1 has greater mass so it has higher speed

Step-by-step explanation:

We have given satellites have same radius

Let R is the radius of both satellites

Let
`M_1\ and\ M_2` are the mass of both satellite

Orbital speed is given by
`orbital\ speed=\sqrt{(GM)/(R)}`

In question it is given
`M_1=2M_2`

From the relation we can see that orbital speed is directly proportional to the mass

So the satellite which has greater mass will have greater orbital speed

As the satellite 1 has greater mass so it has higher speed