Concept explainers
(a)
The gravitational potential energy relative to its starting position.
(a)
Answer to Problem 7A
The gravitational potential energy relative to its starting position is
Explanation of Solution
Given info:
The work to elevate the bucket of water is
Formula used:
The expression for potential energy as follows:
Here,
Calculation:
Consider the required energy to raise the bucket would be transferred into potential energy.
Find the gravitational potential energy as follows:
Hence, the gravitational potential energy relative to its starting position is
Conclusion:
Thus, the gravitational potential energy relative to its starting position is
(b)
The gravitational potential energy if the bucket were raised twice as high.
(b)
Answer to Problem 7A
The gravitational potential energy if the bucket were raised twice as high is
Explanation of Solution
Given info:
The work to elevate the bucket of water is
Formula used:
The expression for potential energy as follows:
Here,
Refer part (a).
The gravitational potential energy relative to its starting position is
Find the gravitational potential energy if the bucket were raised twice as high as follows:
Conclusion:
Thus, the gravitational potential energy if the bucket were raised twice as high is
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Conceptual Physics: The High School Physics Program
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