Formula For Work
The formula for work is used to calculate the work. Before we learn the formula, let us recall what work means. Work is said to be done when we apply a force on an object and the object experience displacement. If the displacement in the direction of force is zero then the work done becomes zero. The formula for work is used to calculate work done in moving an object. Let us learn more about the formula for work along with solved examples in the following section.
What Is Formula For Work?
Work is the product of the force applied and displacement in the direction of the force applied. Work is a scalar quantity. SI unit of work is Joule (J). The formula for Work can be expressed as,
W = F.d
W = (Fcos θ)d
where,
 W = work done
 F = Force applied
 d = displacement in the direction of the force.
 θ = is the angle between force and direction of motion
SI unit of work is Joule (J). If 1 joule of work is done then the formula for work comes out to be
1 J = 1 N.m
Solved Examples Using Formula For Work

Example 1: 10 Newton of force is applied on a body which displaces it by 2 meters. Calculate the work done by using the formula for work.
Solution:
To find: Work done
Given: Force (F) = 10N
Displacement (d) = 2 m
Using Formula For Work,
W = F.d
= (10)(2)
= 20Nm
Answer: 20 Nm of work is done when a 10 Newton of force displaces an object by 2 meters.

Example 2:
A coolie at a railway station carries a bag weighing 100 N through some distance. Calculate the work done by the coolie on the bag by using the formula for work.
Solution:
To find: Work done by the coolie.
Given: Weight of the bag = 100N
Also, the weight of the bag will be acting in the vertical direction and its motion is in the horizontal direction. So the displacement of the bag in the direction of the force (weight) is zero.
d = 0
Using Formula For Work,
W = F.d
= (100)(0)
= 0 J
Answer: Work done by the coolie on the bag is zero.