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A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed. The work done by the ‘weight of the suitcase’ on the suitcase is
  • a)
    positive
  • b)
    negative
  • c)
    zero
  • d)
    undefined
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A porter with a suitcase on his head is climbing up a flight of stairs...
Explanation:

Work done by weight of the suitcase:
- When the porter is climbing up the stairs with the suitcase on his head, the weight of the suitcase is acting in the downward direction.
- The displacement of the suitcase is in the upward direction as the porter climbs the stairs.
- Since the force of gravity (weight) and the displacement are in opposite directions, the work done by the weight of the suitcase is negative.
- This is because work is defined as the product of the force acting on an object and the displacement of the object in the direction of the force.
Therefore, in this scenario, the work done by the weight of the suitcase on the suitcase is negative.
Community Answer
A porter with a suitcase on his head is climbing up a flight of stairs...
Zero
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A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed. The work done by the ‘weight of the suitcase’ on the suitcase isa)positiveb)negativec)zerod)undefinedCorrect answer is option 'B'. Can you explain this answer?
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