Gravitation 2 Question 5

8. If g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the Earth, is

(1983,1M)

(a) 12mgR

(b) 2mgR

(c) mgR

(d) 14mgR

Objective Questions II (One or more correct option)

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Answer:

Correct Answer: 8. v=2Gd(M1+M2)

Solution:

  1. ΔU=mgh1+h/R

Given, h=R

ΔU=mgR1+R/R=12mgR



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