Question

(4) Two forces of magnitude A and B are acting at right angle to each other.The magnitude of their resultant is​

Answer 1

Answer:

A+B is the right answer

Answer 2

Answer:

given = 2 forces A & B.

to find = resultant magnitude.

solution ,

two forces of magnitude A and B  the magnitude of their resultant is

               R =  A+B

               R²=  ( A+B)² = A²+B²+2ABCosθ

               R²=  A²+B² + 2AB [Cos90°]

               R²= $\sqrt{A^{2}+B^{2} }$