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Question
You lift a suitcase from the floor and keep it on a table. The work done by you on the suitcase does not depend on ______.
Options
the path taken by the suitcase
the time taken by you in doing so
the weight of the suitcase
your weight
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Solution
You lift a suitcase from the floor and keep it on a table. The work done by you on the suitcase does not depend on the weight of the suitcase.
Explanation:
When the suitcase is lifted from the floor to the table,
W = mgh
For the same height hh, the work done depends on the weight of the suitcase. It does not depend on your weight, the path taken, or the time taken.
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