The document discusses different meanings of the word "work" and defines work in the context of physics. In physics, work is related to energy and is done when a force causes an object to move in the direction of the force, resulting in a change in the object's energy. Work can be calculated as W=Fd, where W is work, F is the applied force, and d is the displacement of the object in the direction of the force. The standard unit for work is the joule, which is equal to one newton of force applied over one meter of displacement.

3.  What comes to your mind when you
hear the word ‘work’? The word work
has many meanings. When people ask,
“what is your work?” They refer to a
job or employment. When people say,
“I’ll meet you after work.” They
refer to the part of a day devoted to
an occupation or undertaking. When
your teacher asks, “Have you done
your homework?” They refer to the
task or activity needed to be
accomplished..

4.  In Physics, work is an abstract
idea related to energy. When
work is done it is accompanied
by a change in energy. When
work is done by an object it
loses energy and when work is
done on an object it gains
energy.

5.  Work is done if the objec t you push moves a
distance in the difference towards which you are
pulling it…
Figure 1. A girl pushing a chair & A boy pushing a toy car

6.  No work is done if the force you exert does not
make the object move…
Figure 2. A boy pushing a wall

7.  No work is done if the force you exert does
not make the object move in the same direction
as the force you exerted…
Figure 3. A waiter carrying a tray

8.  Work is done when the force (F)
applied to the object causes the
object to have a displacement (d) in
the same direction as the force
applied. The symbol for work is
capital W. The work done by a force
can be calculated as
W= Fd

9.  The unit force is
Unit of force= kg m/s^2 or newton, N
 Hence, the unit for work, W
W= Fd
Unit of work= unit of force x unit of
displacement
Unit of work = N m
Unit of work= Nm or Joules, J
 The unit, joule (J) is named after the English
Physicist James Prescott Joule. This is also a
unit of energy. One (1) Joule I equal to the
work done or energy expended in applying a
force of one Newton through a distance of
one meter.