Is work being done when a person is holding a ball over their head?

This is because the distance is zero. If someone is using force to hold a rock over their head while walking eastward across a field, no work has occurred. This is because the force is not in the same direction (the force is up) as the distance moved by the rock (eastward).

Is work being done if the object doesn’t move?

work: A measure of energy expended in moving an object; most commonly, force times displacement. No work is done if the object does not move.

What is the work done by a man carrying a load in his head and walking through a corridor?

Because person moves horizontal and force of gravity is vertical. So work done is Zero.

What is the work done by a person carrying a heavy load walks on a level road?

1. Work done by a coolie, walking on level road with load on his head, on the load is zero. Θ is an angle between force and displacement.

Is work done when holding an object?

So yes, you spend energy for holding the object up: to let this counter-acceleration exist. So you need energy to hold up a mass but no work is done if the object is at rest on your hand, since its kinetic energy is NOT varying.

Does no work mean no motion?

The force exerted by the person is an upward force equal to the weight of the box, and that force is perpendicular to the motion. If there is no motion in the direction of the force, then no work is done by that force.

What is work done by a person carrying a load on his head and walks along a horizontal level road?

In this case gravitational force is acting in vertically downward direction and displacement is in horizontal direction. Hence, work done by the person is zero.

Does a Labour carrying load in his back do a work if he moves in horizontal plane?

A porter carrying a load on his head on a horizontal road does no work against Gravity.

Can work be done without energy?

No, without work being done, energy can’t be used. “Energy is the capacity to do work.” and this capacity in a body can be changed when that body does work against or on something(by applying force).