- #1
trivk96
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Homework Statement
When it orbited the Moon, the Apollo 11 spacecraft ’s mass was 7170 kg, its period was 121 min, and its mean distance from the Moon’s center was 1.87167 × 106 m. Assume its orbit was circular and the Moon to be a uniform sphere of mass
7.36 ×1022 kg. Its orbital speed was 1619.837645 m/s
What is the minimum energy required for the craft to leave the orbit and escape the Moon’s
gravitational field?
Answer in units of J
Homework Equations
Don't know of any
maybe UG=-Gm1m2/r
The Attempt at a Solution
UG=(6.67259*10−11*7.36*1022*7170)/1.87167*106
But I do not think this is right