Which of the following is not necessary for keeping a satellite in its orbit ?

Centripetal force

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Frictional force

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Gravitational force of Earth

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Tangential speed

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Frictional force
The motion of the moon around the earth (circular motion) is due to the centripetal force. This centripetal force is provided by the gravitational force of attraction due to the earth. If there were no such force, the satellite would pursue a uniform straight line motion. A tangential speed is necessary for the circular motion to occur otherwise the moon would fall to the earth. Frictional force has nothing to do for keeping a satellite in its orbit.

Suggest Corrections

Similar questions

The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?

Q. Assertion :An astronaut inside a massive spaceship orbiting around the earth will experience a finite but small gravitational force. Reason: The centripetal force necessary to keep the spaceship in orbit around the earth is provided to keep the spaceship in orbit.

Q. Two satellites orbit the earth in circular orbits, each traveling at a constant speed. The radius of satellite A’s orbit is R, and the radius of satellite B’s orbit is 5R. Both satellites have the same mass. How does F_A, the centripetal force on satellite A, compare with F_B, the centripetal force on satellite B ?

Q. Two satellite A and B of same mass orbit the Earth in orbit of radius R and 3R respectively. Compare the centripetal force

F_{A}

on satellite A and

F_{B}

on satellite B.

Q. A satellite is orbiting round the earth. The centripetal force acting on the satellite is

F

. The force of the satellite on the earth is also

F

. The net force on the satellite is :

Join BYJU'S Learning Program