A satellite is revolving round the earth at a height (R/2) from surface of earth in circular orbit. The change in speed required for the satellite to escape to infinity for the satellite to escape to

Question

A satellite is revolving round the earth at a height (R/2) from surface of earth in circular orbit. The change in speed required for the satellite to escape to infinity for the satellite to escape to infinity is: [Take R as radius of earth; and M as mass of earth]

Prashant Kotian · Accepted Answer

Correct answer: B. 0 GM 2GM V 3R / 2 3R   In order to escape to infinity let (V  V0) is the speed change required. Thus, 2 GMm 1 m(v) 0 (3R / 2) 2    Thus, 4GM v 3R  Thus speed change required = v  v0 4GM 2GM V 3R 3R    ;   GM V 2 2 3R   

💡 Solution & Explanation

Practice 22,000+ questions like this