Questions
A satellite is moving in circular orbit around the earth with orbital speed v. It radius of earth is R and acceleration due to gravity on its surface is g, then height of the satellite above the surface of earth is
detailed solution
Correct option is B
(2)Orbital speed V= GMr Now g= GMR2 ⇒ GM=gR2Also, r=R+h∴ V= gR2R+h ⇒ h= gR2V2−RTalk to our academic expert!
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The masses, each of mass m are kept on the vertices of an equilateral triangle of side a. Find the work needed to be done to change the length of the triangle twice of its original value.
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