Very Short Question and Answers - Work as per Science

A force must act on an object, and the object must be displaced.

It indicates that work is done since a force was applied and the pebble was displaced.

The trolley moves after the girl exerts a force on it, demonstrating that work is done.

Work is not done because no force is applied on the book.

Yes, work is done because a force acts on the cart and it gets displaced.

No, work cannot be done without a force acting on the object.

Pushing a car that then moves is a common situation where work is done.

No, work is not done because there is no displacement.

An object can be displaced due to the influence of another object, like friction or an external force.

Work is defined as the product of force and displacement in the direction of the force.

There must also be displacement of the object in the direction of the applied force.

No, because although a force is applied, there is no displacement of the bag.

Pushing against a solid wall without moving it is an example where work is not done.

The object must be displaced as a result of the applied force.

Yes, work can still be done if the object has been displaced, regardless of original position.

Work is calculated using the formula: Work = Force × Displacement × cos(θ), where θ is the angle between the force and the direction of displacement.

Energy is transferred or converted, often resulting in an increase in kinetic or potential energy.

Because while a force is applied, there is no displacement of the object while it is being held.

Work is a means of transferring energy; when work is done, energy is transferred from one system to another.

It is simply referred to as 'no work done' or 'work is zero.'