Question

4.
derive
an expression for magnitude of
resultant
using parallelogram law of
vector addition.​

Answer 1

Answer:

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Explanation:

Let θ be the angle between P and Q and R be the resultant vector. Then, according to parallelogram law of vector addition, diagonal OB represents the resultant of P and Q. Now, expand A to C and draw BC perpendicular to OC. which is the magnitude of resultant.