In a plane structure a particular point is acted on by forces of 1.2 kN and 2.0 kN in the plane, the angle between the forces being 15°. What is the resultant force? An object of weight 5 N hangs on a...

In a plane structure a particular point is acted on by forces of 1.2 kN and 2.0 kN in the plane, the angle between the forces being 15°. What is the resultant force?

An object of weight 5 N hangs on a vertical string. At what angle to the vertical will the string be when the object is held aside by a force of 3 N in a direction which is 20° above the horizontal?