Question

If more than three forces are acting on a heavy rigid body such that the body is in balanced state, then all the forces are ______.

Options

• collinear.

• coplanar.

• acting in random direction.

• represented by the sides of a polygon of vectors.

Answer 1

If more than three forces are acting on a heavy rigid body such that the body is in balanced state, then all the forces are represented by the sides of a polygon of vectors.

Explanation:

By the polygon law of vector addition, if multiple forces acting on a body form a closed polygon when drawn head-to-tail, their resultant is zero, meaning the body is in equilibrium.