Two forces of and act at a point with an angle of between them. Find the magnitude of the resultant.

Answer and explanation

Correct answer: C.

  1. Step 1: .
  2. Step 2: , so N.
Answer
.
Why not the others: is what you get if you add the magnitudes. is what you get if you forget the square root. is what you get if you use instead of .

Practise more Applied Maths: Forces, Friction and Equilibrium.

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