Question

two forces of magnitude 12N and 13N have a resultant of 1N find the angle between the forces what shall be the angle between the two forces if their resultant is 0.9 N​

Answer 1

Answer:

The resultant of two vectors is given by

A² + B² + 2AB Cosx = R²

12² + 13² + 2×12×13×Cosx = 1

144 + 169 + 402 Cosx =1

402 Cos x = - 402

Cos x = - 1

x = 180°

A resultant of 0.9 N is not possible because the minimum value a resultant of two vectors can attain is A ~ B i.e. A difference B.

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