Question

I can't remember how to do this

Answer 1

ok so I have three "forces"
force 1 mass=100g, direction= 0 degrees
force 2 mass= 100g, direction= 90 degrees
force 3 mass(solved)=141.42g, direction=?

Answer 2

system in equilibrium ?

Answer 3

yes

Answer 4

since the forces are equal in magnitude, you should be able to **guess** the direction with out actually working

Answer 5

do you know swimming ?

Answer 6

suppose F1 is the force due to flowing water and you're diving straight along y axis :