Concept explainers
The number of boxes to carry on each trip and the time required to carry the boxes on each trip.
Answer to Problem 97A
The number of boxes to carry on each trip is
The time required for each trip is
Explanation of Solution
Given:
The total mass of the 30 boxes is
The distance above the ground is
The number of boxes is
The given graph is shown below.
Formula used:
The expression for the work done is,
Here,
The expression for the power is,
Here,
Calculation:
Consider the acceleration due to gravity as
The work done is,
The mass of a box is,
From the graph, the maximum power is
The number of boxes to carry on each trip is,
The time required to carry the boxes on each trip is,
Conclusion:
Thus, the number of boxes to carry on each trip is
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Glencoe Physics: Principles and Problems, Student Edition
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