This presentation discusses force, work, energy, and power. It defines force as a phenomenon that produces or changes motion. Work is defined as the product of force and displacement along the line of action. Positive work occurs when force and motion are in the same direction, while negative work occurs when they are opposite. Energy is the ability to do work and exists in many forms, including kinetic and potential. Kinetic energy is due to motion, while potential energy is due to position or deformation. The work-energy theorem states that work done by external forces causes a change in mechanical energy. Finally, power is defined as the rate at which work is done over time.

2. Mehran University ofMehran University of
Engineering & TechnologyEngineering & Technology

3. Presentation Of:-Presentation Of:-
Force,Work, Energy & PowerForce,Work, Energy & Power
Presented By:Presented By:
Ghulam Mustafa GhoriGhulam Mustafa Ghori
Roll# 13TE89Roll# 13TE89

4. Content:Content:
1)1) ForceForce
2)2) WorkWork
3)3) EnergyEnergy
4)4) PowerPower
5)5) Their Application’s in TextileTheir Application’s in Textile
EngineeringEngineering

5. Force:-Force:-
A phenomenon which produces, or tends
to produce, motion or change of motion
in body called Force.
F=ma
S.I Unit:
Newton

6. WorkWork
The product of force and the amount of
displacement along the line of action of
that force, figure 1.1 shows work
Units: ft .
lbs (horsepower)
Newton meter (Joule)
ntdisplacemeForceWork ×=

7. Figure 1.1

8. Work = F x dWork = F x d
To calculate work done on an object, we
need:
The Force
The average magnitude of the force
The direction of the force
The Displacement
The magnitude of the change of position
The direction of the change of position

9. +ve & -ve Work+ve & -ve Work
Positive work is performed when
the direction of the force and
the direction of motion are the
same
Example:
Throwing a ball

10. +ve & -ve Work+ve & -ve Work
Negative work is performed
when the direction of the force
and the direction of motion are
the opposite
e.g:
Catching

11. EnergyEnergy
Energy (E) is defined as the capacity to do
work (scalar)
Many forms
No more created, only converted
chemical, sound, heat, nuclear, mechanical
Kinetic Energy (KE):
energy due to motion
Potential Energy (PE):
energy due to position or deformation

12. Kinetic EnergyKinetic Energy
Kinetic Energy of an object is the energy
which it possesses due to it’d motion.
S.I unit is Joule
Formula:-
KE = 1/2 mv2

13. Potential EnergyPotential Energy
Gravitational PE:
Energy due to an object’s position
relative to the earth.
S.I unit is Joule
Formula:
P.E=mgh
S.I unit Joule

14. Figure 1.2

15. Work - Energy RelationshipWork - Energy Relationship
The work done by an external force
acting on an object causes a change in
the mechanical energy of the object
( ) )(
2
1 2
ifif rrmgvvmFd
PEKEFd
EnergyFd
−+−=
∆+∆=
∆=

16. PowerPower
The rate of doing work
Work = Fd
Units: Fd/s = J/s = watt
velocityForcePower
tFdPower
timeWorkPower
∗=
=
=
/
/

17. Energy is required to run the Machine,
like we have draw frame, to run the
machine energy is required then machine
will run, and generate power and will
transmit power with the help of gear or
belt drive system
And Machine will work, it will do
equalizing, parallelization, dust removal
and form sliver

18. Draw frame

19. Power Transmission