GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is the best example of work being done.
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doing homework
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lifting a box
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pushing a stationary box
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holding a box
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Explanation:
Detailed explanation-1: -Examples of works : Pushing a car horizontally from rest; shooting a bullet (the powder does the work); walking up stairs; sawing a log.
Detailed explanation-2: -A force must cause a displacement in order for work to be done. A book falls off a table and free falls to the ground. Yes. This is an example of work.
Detailed explanation-3: -Moving a table. Pushing and pulling a door. Walking. Lifting a rock.
There is 1 question to complete.