two force 10N eat are inclined 120¤ to each other find replace the given force system

Answer 1

well, if one points 60 deg above the x axis and one points 60 deg below then the resultant will point in the x direction and the y components cancel
Rx = 10 cos 60 + 10 cos 60 = 20 * 1/2 = 10 N
Ry = 10 sin 60 - 10 sin 60 = 0