Solve this one
Prove that if three coplanar forces acting in one plane upon a rigid body keep it in, equilibrium, they must meet a point or be parallel.
dear student,
Let us consider that the 2 forces pass from point A and the line of action of 3rd Force does not pass through Point A, as the body is in equilibrium the net Torque about point A should be zero but as the third force is not passing through point A, the moment of the third force is not zero thus the body should not be in equilibrium which leads to a contradiction.
regards
Let us consider that the 2 forces pass from point A and the line of action of 3rd Force does not pass through Point A, as the body is in equilibrium the net Torque about point A should be zero but as the third force is not passing through point A, the moment of the third force is not zero thus the body should not be in equilibrium which leads to a contradiction.
regards