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प्रश्न
What is the S.I. unit of work? Define it.
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उत्तर
The S.I. unit of work is newton-metre or joule (J).
1 Joule = 1 N × 1 m.
1 J of work is said to be done by a force of 1 N if it displaces a body by 1 m in the direction of the force.
संबंधित प्रश्न
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2) What is the direction of the force?
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Name the quality which is measured in Wh.
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What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
1 kWh = ______ J.
A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep well, while his father does it in 2 minutes. Compare:
- the work, and
- power developed by them.
