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Physics

General

Easy

Question

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

$\frac{G M m}{12 R^{2}}$
$\frac{G M m}{3 R^{2}}$
$\frac{G M m}{8 R}$
$\frac{G M m}{6 R}$

The correct answer is: $fraction numerator G M m over denominator 6 R end fraction$

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physics-General

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For this question, we should know the rules of dot product.

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