4.7 Triangle Of Forces

Question 1

If 3 coplanar forces add up to zero - what shape would their vector addition diagram make?

Answer 1

A triangle

Question 2

State the 2 conditions for a triangle of forces diagram for forces in equilibrium

Answer 2

• arrows are drawn to represent each of the 3 forces end to end
• the triangle is closed because the net force is zero therefore the object is in equilibrium