Question

Give five examples for zero work done?

Answer 1

HEY MATE HERE IS YOUR ANSWER:

ZERO WORK DONE MEANS WHEN THE DISPLACEMENT IS ZERO.

WHEN YOU SET MOTION AN OBJECT IN SPACE BY PUSHING IT ONCE AND YOU MUST REMAIN MOVE LITERALLY FOREVER.

WHEN A BODY MOVES AROUND A CIRCLE THE WORK DONE IS ZERO BECAUSE cos90=0.

HOPE IT HELPS YOU

Answer 2

Zero work done means the force and displacement are in perpendicular or in other words the force and displacement are zero.

Examples

A man pushing a wall and the wall does not moves. Zero work done

Sleeping also

Force applied by the road on bike and the bike also exerts same equal and opp force on it

Man lifting box straight up and moves forward