A Spacecraft (Mass = M₁) Orbits a Planet (Mass =

question 10

Multiple Choice

A spacecraft (mass = m₁) orbits a planet (mass = m₂) in a circular orbit (radius = r) . What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?

• A)Gm₁m₂/(4r)
• B)Gm₁m₂/R
• C)Gm₁m₂/(2R)
• D)Gm₁m₂/(3R)
• E)2Gm₁m₂/(5R)

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