Gravitation Question 134

Question: The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is [AIEEE 2002]

Options:

A) mgR/2

B) 2 mgR

C) mgR

D) mgR/4

Show Answer

Answer:

Correct Answer: C

Solution:

$ [\frac{1}{2}mv_{e}^{2}=\frac{1}{2}m,,2gR=mgR] $



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