Question

o
if two force of magnetucie 3
and 5 action on a partiebe at
angle of 60° then find the
magnitude and disn of nesudaw.
forcen​

Answer 1

Explanation:

let vectors be 3x and 5x

hence

\sqrt{9 {x}^{2} + 25 {x}^{2} + 2 \times 5x \times 3x \times \cos(60) } = 35

9x

2

+25x

2

+2×5x×3x×cos(60)

=35

\begin{lgathered}34 {x}^{2} + 30 {x}^{2} \times \frac{1}{2} = 1225 \\ 49 {x}^{2} = 1225 \\ {x}^{2} = 25 \\ x = 5\end{lgathered}

34x

2

+30x

2

×

2

1

=1225

49x

2

=1225

x

2

=25

x=5

vectors are 15 and 25