Multiple choice general knowledge science & technology

The amount of work done by a carpenter holding a 20kg sheet of drywall at 2.5 meters for 30 minutes is...

  1. 0 J

  2. 500 J

  3. 50 J

  4. 100 J
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A Correct answer
Explanation

Work is defined as force multiplied by displacement in the direction of the force. Since the carpenter holds the drywall stationary, there is no displacement, so the work done is zero joules. The time spent holding and the weight of the object don't matter when nothing moves.

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