Question

Derive an expression for magnitude and resultant of addition of two vectors using parallelogram law of additional of vectors .

Answer 1

Explanation:

Derivation of the law

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.

Answer 2

Explanation:

Derivation of the law

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.