Multiple choice

A porter carrying a load does _______ against gravity.

  1. maximum work

  2. minimum work

  3. no work

  4. average work
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Work in physics is defined as force multiplied by displacement in the direction of the force (W = F × d × cos θ). When a porter carries a load horizontally, the gravitational force acts downward while the displacement is horizontal, so the angle between them is 90° and cos 90° = 0. Therefore, no work is done against gravity in horizontal carrying.

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