Question

three boys are all pulling on there ropes attached at the center, the knot does not move. What is the force being applied by boy #3 (a graph is also given)

Answer 1

Trig is wonderful

Answer 2

yeah i agree...

Answer 3

is there a formula for this?

Answer 4

Ok, so you have to use vectors

Answer 5

ok but how? do i connect the line like this?

Answer 6

I forget exactly how to do it, but you have to find the sum of all three vectors using the magnitude and the angle between them

Answer 7

what do you mean?

Answer 8

Have you done vectors yet?

Answer 9

With magnitude and things like that?

Answer 10

yeah it is an arrow that shows the direction and force that been applied

Answer 11

Ok, and have you added vectors before?

Answer 12

no

Answer 13

sorry