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Olympiad workbookNSEPGravitation

Two planets, each of mass M and radius R are positioned (at rest) in space, with their centres a distance 4 R apart. You wish to fire a projectile from the surface of one planet to the other. The minimum initial speed for which this may be possible is

Options

A2 G M 5 R
B2 G M 3 R
C4 G M 3 R
D3 G M 2 R

Correct answer

B. 2 G M 3 R

Step-by-step solution

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