Question

find the net force​

Answer 1

Answer:

Fa=8N+10N=18N

Fb=12N

F=Fa-Fb

18N-12N=6N

Answer 2

Answer:

6N

Explanation:

The 8N and 10N forces are parallel to each other so angle between them will be 0 degree

So their Resistlant Force

R = root A^2 + B^2 + 2cos(angle)

R = _/ A^2 + B^2 + 2AB ------( cos0 = 1)

R = _/(A+B)^2

Hence R = A + B

R = 10 + 8

R = 18N

Now the R force and 12N are anti parallel so the angle between them is 180

R' = A-B -----( You can derive it urself by taking Cos180 = -1)

R' = 18 - 12

R' = 6N