Give five examples of zero work?

Zero work means no work is done when displacement is zero or force is perpendicular to displacement.

Examples:

1. A man carrying a load on his head while walking horizontally.
2. Centripetal force in circular motion.
3. A person pushing a wall that does not move.
4. Magnetic force on a moving charge at right angle.
5. Weight of a body moving horizontally on a frictionless surface.