Question

What is the best explanation of work?

A. Work occurs when energy acts on an object.
B. Work occurs when a force acts on an object and causes a displacement of that object.
C. Work occurs when a force acts on an object.
D. Work occurs when force acts to hold an object in place.

Answer 1

Work occurs when a force acts on an object and causes a displacement of that object.

Step-by-step explanation:

If F is the force applied to an object and d is the displacement caused due to this force, then the amount of work done by it is given by :

W = F × d

Where

F is the force applied

d is the displacement

Work done also depends on the angle between force and the displacement. So, the correct option is "Work occurs when a force acts on an object and causes a displacement of that object".

Answer 2

Work occurs when a force acts on an object and causes a displacement of that object.

Step-by-step explanation:

a . Force applying over a distance or in other words force causing the movement (displacement) of an object is known as Work.

b. An activity with mental or physical effort is done in order to achieve a result is called work.

c. A constant force integrates the product of the force and distance.

Ex : 1) when the body moves in the direction of force

2) shooting a bullet

3) Pushing a car horizontally from rest

4)walking up stairs

5) sawing a log.