Question

If all the three forces are equal in magnitude, how will the parallelogram modify​

Answer 1

Answer:

Explanation:

Three equal forces must be equally inclined to each other. Therefore the angle between any two forces is 360/3 = 120 °

If the resultant of three forces is zero, each three force is the equilibrant of the other two forces.

In other words the resultant of any two forces is equal but opposite to the third force.

The resultant R of two equal forces P and P with an angle θ between them is found from

R^2 = 2P^2 + 2P^2 cos θ

If Q is the third force Q = R = P

Q^2 = R^2 = P^2 = 2P^2 + 2P^2 cos θ

cos θ = -(1/2)

θ = 120 °

Angle between any two forces is 120°.

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