Most Asteroids Are Oblong in Shape

Most asteroids are oblong in shape. Approximate an asteroid as being made up of two identical spheres of mass M and radius R that are just touching each other, in a figure eight. In terms of G, M, and R, what is the escape velocity for a spaceship taking off from the top of the figure eight?

A) (2GM/R) ^1/2
B) (4GM/3R) ^1/2
C) (8GM/3R) ^1/2
D) (3GM/R) ^1/2
E) (7GM/5R) ^1/2

Correct Answer:

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