why value of k in f=kma is considered as 1 or rigid why it not changes

Asked by vedant sharma | 24th Nov, 2013, 12:21: AM

Expert Answer:

Newton's second law is given by,
 
F = kma
 
Here, k is a praportionality constant.
 
Now, the SI unit of force is defined as,
 
1N Force = Force that causes an acceleration of 1 m/s2 to a mass 1 kg
 
1 N = 1 kg.m/s2
 
This defination of 1 N force gives k =1 such that,
 
F = ma
 
Thus, for simplysity k is defined as 1.
 
Physicits consider that, system of units in which k has to be taken differnt form 1 is not consistant and it makes the calculations very difficult.

Answered by Komal Parmar | 25th Nov, 2013, 03:47: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.