Critical velocity of a satellite orbiting around the earth (radius R) at a distance of 8 R from the surace is 2.5 km/s. Critical velocity of another s
Critical velocity of a satellite orbiting around the earth (radius R) at a distance of 8 R from the surace is 2.5 km/s. Critical velocity of another satellite orbiting at a height of 15 R from the surface is
A. 1.40 km/s
B. 1.87 km/s
C. 4.44 km/s
D. 3.33 km/s
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Correct Answer - b
`(V_(C_(2)))/(V_(C_(1)))=sqrt((r_(1))/(r_(2)))=sqrt((9R)/(16R))=(3)/(4).`
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