Energy required to move a body of mass m from an orbit of radius 2R to 3R is

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asked Mar 22, 2018 in Physics by paayal (26,720 points) 4 6 11

Energy required to move a body of mass m from an orbit of radius 2R to 3R is

(a) GMm/12R2 

(b) GMm/3R2
(c) GMm/8R 

(d) GMm/6R.

1 Answer

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answered Mar 22, 2018 by sanjaydas (61,430 points) 5 7 7
selected Mar 24, 2018 by Vikash Kumar
 
Best answer

(d) : Energy = (P.E.)3R – (P.E.)2R

= - (GmM)/3R - ( - (GmM)/2R) = + (GmM)/6R.

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