
Concept explainers
(a)
To Explain: The way gravitational force affects the path of rock thrown horizontally.
(a)

Explanation of Solution
Introduction:
Less effort is required to lift a rock on the Moon as compared to that on the Earth. This is because the gravitational field of the Moon is one-sixth gravitational field of the Earth.
When the rock is thrown horizontally, there is no effect of the gravitational force. Acceleration due to gravity acts vertically downwards always, so it does not affect horizontal motion.
(b)
To Explain:Whether it would hurt more on Moon or Earth when rock is accidently dropped on toe.
(b)

Explanation of Solution
Introduction:
The gravitational field of the Moon is one-sixth gravitational field of the Earth. The weight of the rock would thus be one-sixth on Moon as compared to that on the Earth.
When the rock is accidently dropped on toe, it would hurt less if the person is on Moon as compared to that on the Earth because the rock would weigh less on moon.
Chapter 7 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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