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:

[v0=GMr=gR2r=10×(64×105)28000×103] [=71.5×102,m/s=7.15,km/s]



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