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Question: Two identical satellites are moving around the earth in circular orbit at heights 3R and R respectiv...

Two identical satellites are moving around the earth in circular orbit at heights 3R and R respectively where R is the radius of the earth. The ratio of their kinetic energies is :

A

2 : 1

B

1 : 2

C

3 : 1

D

2 : 3

Answer

1 : 2

Explanation

Solution

ER =

12\frac { 1 } { 2 }