Question

Suppose an earth satellite, revolving in a circular orbit experiences a resistance due to cosmic dust. Then.

• A. Its kinetic energy will increase
• B. Its potential energy will decrease
• C. It will spiral towards the earth and in the process its angular momentum will remain conserved
• D. Both a and b is correct

Answer 1

The correct option is D Both a and b is correct

The Kinetic energy of the satellite increases in spiral path as it approach the earth so $V$ must increase the total mechanical energy of the satellite decreases due to resistance from conic dust as satellite approaches earth so potential energy decreases.

Thus Kinetic energy increase potential energy decreases.