Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 10)
10.
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
Discussion:
35 comments Page 3 of 4.
Qamar said:
1 decade ago
Let R = f then,
f^2 = f^2+f^2+2f.fcosa.
-f^2/2f^2 = cosa.
cosa = -1/2.
a = 120.
f^2 = f^2+f^2+2f.fcosa.
-f^2/2f^2 = cosa.
cosa = -1/2.
a = 120.
Sathish said:
1 decade ago
Because two forces and one resultant.
Resultant between two forces.
Resultant between two forces.
Himanshu said:
1 decade ago
If the angle would be 120 than only at the mid xcos60+xcos60 = x.
Kiran kumar said:
4 years ago
According to Lamis theorem : p/sinα+q/sinβ+r/sinγ.
Ranga... said:
7 years ago
Two force and one resultant.
Than 360/3-120.
Than 360/3-120.
Punith said:
9 years ago
Why 120° why not the answer be 90°?
Krishna said:
1 decade ago
cos(120) = cos(90+30) = -sin30 = -0.5.
Naiya said:
8 years ago
I think we can apply Lami's theorem.
Srinu said:
9 years ago
It is based triangle law of forces.
Ajay said:
8 years ago
Can anyone tell exact explanation?
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