In our previous blogs of the series, we talked about ‘Law of Conservation of Energy’. Today we are going to discuss ‘Rate of Doing Work.’.
As we have discussed in our previous blogs of work, energy, and law of conservation of energy, work is the product of applied force and displacement and whenever any amount of energy is consumed, a work is done. Since the beginning of existence, everything does work. It doesn’t matter if it is a living thing or not. Human does thousands of works in everyday life. Every single human or machine works with different capacity and efficiency. If one machine can do the same work in very short amount of time, the other can take little longer. If one person can climb a tree in 1-minute, other person can climb the same tree in just 40 seconds or even less. The efficiency and capability of every human being and machine is different.
This relation between work and time is known as rate of doing work. It is also well known by the term ‘Power’.
The relation of power and work is represented as;
P = W/t
According to this equation, to increase the power of any machine or human we need to increase the amount of work done or decrease the time taken.
The unit of power is watt which is assigned in the honor of James Watt and the symbol is W.
That’s enough for now, in our next blog we will discuss about sound. Until than read more about power and put your quarries in the comment box.
