Gravitation Question 262
Question:A satellite is to revolve round the earth in a circle of radius 8000 km. The speed at which this satellite be projected into an orbit, will be [Pb. PET 2002]
Options:
A) $ [3,,km/s] $
B) $ [16,,km/s] $
C) $ [7.15,,km/s] $
D) $ [8,,km/s] $
Show Answer
Answer:
Correct Answer: C
Solution:
$ [v_{0}=\sqrt{\frac{GM}{r}}=\sqrt{\frac{gR^{2}}{r}}=\sqrt{\frac{10\times {{(64\times 10^{5})}^{2}}}{8000\times 10^{3}}}] $ $ [=71.5\times 10^{2},m/s=7.15,km/s] $
