Solving Physics Time Problem: Apollo Lunar Landing Mission

Thread starter mathcrzy
Start date Oct 4, 2007
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Physics Time

AI Thread Summary

The discussion centers on calculating the orbital period of the Apollo command module around the Moon at an altitude of 104 km. The relevant equation used is T^2 = [4π^2(r)]/g, where r is the radius and g is the gravitational acceleration. A participant attempts to solve for T but arrives at an implausible result of 1.7e13 minutes, raising questions about the input values. Specifically, there is confusion regarding the origin of the value 7.35e25, which is likely intended to represent the mass of the Moon. Clarifying the parameters and ensuring correct units are essential for solving the problem accurately.

Oct 4, 2007

mathcrzy

1. Homework Statement

During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 104 km. How long did it take to go around the Moon once?

2. Homework Equations

T^2=[4pi^2(r)]/g

3. The Attempt at a Solution

square root of 4pi^2(7.35e25+104000)/9.8=1.7e13min. this answer does not make sense though

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Oct 5, 2007

Avodyne

Science Advisor

Where does the 7.35e25 come from?

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