Question

11) Calculate the magnitude of the resultant using the above grid for the following REŽĀ+ 36 B c 12) Calculate the magnitude of the resultant R using the above grid for the following R = {C+ ZĀ –B

Answer 1

......................Part (a)..........................

R = x A + y B

R = 1/2 A + 3 B

magnitude of resultant R is

| R | = $\sqrt{}$ {x² + y²}

| R | = $\sqrt[]{}$ $\sqrt{}$$\sqrt[]{}${ (1/2 )² +( 3 )² }

| R | = 3.04

......................Part (b)..........................

R = x A + y B +z C

R = 2 A - B +1/3 C

magnitude of resultant R is

| R | = $\sqrt{}$ {x² + y² +z^2}

| R | = $\sqrt[]{}$ $\sqrt{}${$\sqrt[]{}$ ( 2 )² +( 1 )² + (1/3)² }

| R | = 2.26