Question

Find the odd man out:- Work, Energy, Power, Force

Answer 1

Hint:You can clearly see that out of the four quantities listed in the question, three of the quantities give us the ability to do something, or enables us to do something, on the other hand, the odd one or the remaining fourth quantity is something that is done and doesn’t enable us to do something else.

Complete step by step answer:
The question should be “Find the odd one out:- Work, Energy, Power, Force”
We can clearly see that there are four quantities listed in the question that are related to work or doing work. First, let us have a look at all the four quantities and define them one by one:

Work: Work can be seen as a measure of energy transfer that occurs when an object is moved over a distance by an external force, at least part of which is applied in the direction of the displacement.

Energy: Energy is the capacity for doing work. It may be in the form of potential, kinetic, thermal, electrical, chemical, nuclear, or some other forms of energy.

Power: Power is simply the rate of doing work.

Force: Force can be defined as any action that tends to support or oppose the motion of a body or to distort its shape or size.

Here, we can clearly see that the odd quantity is Work.

The factor due to which we can differentiate the three similar quantities, Energy, Power and Force, out of the four quantities given from the odd quantity of the four is that the three similar quantities are the ones that give us the ability to do work, or enables us to do work. On the contrary, the fourth or the odd quantity is itself Work.

Note:A very common and frequent mistake that a lot of students make in such types of questions is that they check the units of the given quantities, and once they do so, they observe that the units of Work, Energy and Power are quite similar, or almost the same. While the quantity of Force is totally different than the others. Which is a wrong approach to solve the question because if we follow it, we’ll have three types of quantities as Work and Energy share the same unit while Power and Force have different units than others.