Concept explainers
To find: The escape speed on the moon.
Answer to Problem 17A
The escape speed on the moon is
Explanation of Solution
Introduction:
Escape speed is the minimum inertial speed that will cause an object to move upward forever.
To find the escape speed, apply energy conservation.
Where,
At infinity potential energy is zero. To escape, set both terms on the right to zero.
The potential energy of an object of mass m at the surface is
Substituting the values in energy equivalence equation.
Where,
G is the gravitational constant.
M is the mass of an object. (Moon in this case)
R is the radius of Moon.
Substituting the corresponding values,
Conclusion:
Therefore, the escape speed is
Chapter 14 Solutions
Conceptual Physics: The High School Physics Program
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