Three units are given in the statements as follows:I. Newton × metreII. JouleIII. Kilogram × (metre)–2 × (second)2Which of the statements given above are the units for work done?
Question
Three units are given in the statements as follows:I. Newton × metreII. JouleIII. Kilogram × (metre)–2 × (second)2Which of the statements given above are the units for work done?
Solution
The units for work done are:
I. Newton × metre: This is the standard unit for work in the International System of Units (SI). Work is defined as the force (in newtons) multiplied by the distance (in metres) over which the force is applied.
II. Joule: This is the derived SI unit for work. It is defined as the work done when a force of one newton is applied over a distance of one metre.
III. Kilogram × (metre)–2 × (second)2: This is not a unit for work. It is actually the unit for pressure in the SI system.
So, the units for work done are given in statements I and II.
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