Questions
A body starts from rest from a point distant from the centre of the Earth. It reaches the surface of the Earth whose radius is R. The velocity acquired by the body is if
detailed solution
Correct option is B
From law of conservation of energy -GMmro = 12mv2-GMmRor 12mv2 = GMmR-GMmr0or v22 = GMR-GMr0or v2 =2GM[1R-1r0]or v = 2GM(1R-1ro)Talk to our academic expert!
Similar Questions
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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