if the resultant of two forces has the same magnitude as either of the force , then the angle between the two forces is
Answer (1)
7th Jan, 2021
Hello student,
I answered this question previously so, here's a solution to your query :
To find the resultant
R= √(A2)+(B2)+2ABcosx
As given in the query, the magnitude of the force is same and let it be f whose resultant be f too..
Substituting the variables in the above equation we get
f= √(f2)+(f2)+2(f2)cosx
Squaring on both sides we get
f2=2(f2)+2(f2)cosx
By solving we get
cosx=−1/2
Therefore x=120°
Answer : The angle is 120°
Thank you
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