Question

how to calculate the orbital velocity of satellite if the mass is not given .the things which are given are the force and the distance between two bodies​

Answer 1

Answer:

In space, gravity supplies the centripetal force that causes satellites (like the moon) to orbit larger bodies (like the Earth). Thanks to physics, if you know the mass and altitude of a satellite in orbit around the Earth, you can calculate how quickly it needs to travel to maintain that orbit.

A particular satellite can have only one speed when in orbit around a particular body at a given distance because the force of gravity doesn’t change. So what’s that speed? You can calculate it with the equations for centripetal force and gravitational force. For a satellite of a particular mass, m1, to orbit, you need a corresponding centripetal force:

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This centripetal force has to come from the force of gravity, so

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You can rearrange this equation to get the speed:

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This equation represents the speed that a satellite at a given radius must travel in order to orbit if the orbit is due to gravity. The speed can’t vary as long as the satellite has a constant orbital radius — that is, as long as it’s going around in circles. This equation holds for any orbiting object where the attraction is the force of gravity, whether it’s a human-made satellite orbiting the Earth or the Earth orbiting the sun. If you want to find the speed for satellites that orbit the Earth, for example, you use the mass of the