Gravitation Question 268
Question: When a satellite going round the earth in a circular orbit of radius r and speed v loses some of its energy, then r and v change as [JIPMER 2002; EAMCET 2000]
Options:
A) r and v both with increase
B) r and v both will decrease
C) r will decrease and v will increase
D) r will decrease and v will decrease
Show Answer
Answer:
Correct Answer: C
Solution:
$ [B.E.=-\frac{GMm}{r}.] $
If B.E. decreases then r also decreases and v increases as $ [v\propto \frac{1}{\sqrt{r}}] $
