Question

Which of the following single force replace the two force of magnitude 5N and 3N.

Answer 1

Answer:

The force of 8N will replace them

Answer 2

Answer:

The ans will be 7N

Explanation:

if A =90°

then R= $\sqrt{5^2 + 3^2+2*3*5*COS(90)}$

R = 5.83N

the A degree will be divided into two parts where one is paired with 5 and another with 3

let the paired angle with 5 be X

let the paired angle with 3 be y

Angle with 5:

x = $tan^-^1\frac{3sin(90)}{5+3COS(90)}$

x = 30°

IF x = 30°

then

R = 7N