In which situation is work not done?
Understand the Problem
The question is asking to identify which of the given scenarios does not involve work being done. Work in physics is defined as the result of a force moving an object over a distance. The focus here is on understanding the definition of work in physics and applying it to the scenarios presented.
Answer
A car driving at a constant speed down the road.
The situation where a car driving at constant speed down the road involves no net work being done, since no additional force is needed for constant velocity (ignoring friction).
Answer for screen readers
The situation where a car driving at constant speed down the road involves no net work being done, since no additional force is needed for constant velocity (ignoring friction).
More Information
Even though the car is moving, no additional work is done to maintain constant speed, assuming an ideal scenario with no friction or air resistance.
Tips
A common mistake is not accounting for whether force is applied in the direction of motion or if there's any displacement at all.
Sources
- In which situation is no work done? - BYJU'S - byjus.com
- In which situation is no work being done? - Study.com - homework.study.com
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