Grade 11Mechanics
A And B Are Two Vectors and R Is The Resultant. - For What Angle Is IT Maximum
- For What Angle Is It Minimum
A And B Are Two Vectors and R Is The Resultant.
- For What Angle Is IT Maximum
- For What Angle Is It Minimum
4 Answers
Manas Shukla
R is maximum when angle between them is 0 degrees since they just get added.
R is minimum when vectors cancel out the effects of one another
angle between them being 180 degrees
Piyush Kumar Behera
@Manas Shukla how can you say that at 
=180 they cancel out each other ,It is not given that both are equal ,so the term “cancel out each other” doesnot suit.However it can be say that the net resaultant is decreased due to opposing vectors.
Piyush Kumar Behera
Here is another solution:
We know the expression for R=(A2+B2+2ABcos)½
As A2 & B2 are positive and constant so the value of R will be Maximum when cos is Maximum.
Hence cos is maximum at =0o so R is maximum at =0o.
Similarly cos is minimum at =180o so R is minimum at =180o.
If you are helped by my solution then please approve the solution to encourage me.
pradyumna choudhury
for angle to be maximum cos
should be maximum
so as we know cos is maximum at 0 degree
cos
is minimum at 180 degree
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