Work is said to be done when a body undergoes displacement. It is denoted by W.

**Work Formula** is given by

Where

F = force applied and

d = displacement.

Work formula is used to calculate work done, force or displacement in any problems. It is given in Nm.

Where

F = force applied and

d = displacement.

Work formula is used to calculate work done, force or displacement in any problems. It is given in Nm.

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Below are problems on work which helps ou to understand the concept better.

### Solved Examples

**Question 1: **Calculate the work done if 10 N of force acts on the body showing the displacement of 2m?

** Solution: **

Given: Force F = 10 N,

Displacement d = 2m,

Work done W = F $\times$ d

= 10 N $\times$ 2m

= 20 Nm.

**Question 2: **Calculate work done for 2 newton force and 3 metre displacement and angle between force and displacement is 45 degree?

** Solution: **

Given: Force F = 2N,

Displacement d = 3m,

$\theta$ = 45^{o}

Work done W = Fd cos $\theta$^{ }= 2^{}N $\times$ 3m cos 45^{o }= 3.51 Nm. ^{ }

Given: Force F = 10 N,

Displacement d = 2m,

Work done W = F $\times$ d

= 10 N $\times$ 2m

= 20 Nm.

Given: Force F = 2N,

Displacement d = 3m,

$\theta$ = 45

Work done W = Fd cos $\theta$

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