The maximum total power needed.
Answer to Problem 68P
Solution:
Maximum total power needed to lift, to move
Explanation of Solution
Given:
Lifts can move
Average height lift by lift
Concept used:
Power
Work done by force
Newton’s second law:
Because lift moves with slowly with constant speed.
Calculation:
Work done by pulling force
Let average mass of a man
Work done by lift to a man
Work done by lift to
Time taken by lift to do above work
Power of lift
Maximum total power of lift to move
Conclusion: Maximum total power of lift to move
(Average mass of man
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Physics: Principles with Applications
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