Question

State the characteristic properties of a
couple​

Answer 1

Answer:

the pair of external and opposite force is called couple

Answer 2

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(1) An unbalanced unbalanced couple acting on a rigid body hanges its state of rotation, i.e., it produces rotational or angular acceleration. Since the resultant of the forces constituting a couple is zero, the body remains in translational equilibrium. Hence, a couple has only a turning effect.

(2) The magnitude of the torque due to a couple is equal to the product of the magnitude of one of the forces and the arm of the couple.

(3) The torque due to a couple is a vector along the rotation axis perpendicular to the plane of the couple.

(4) The torque due to a couple about any rotation axis perpendicular to its plane is the same.

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