1. Laws of Mechanics (Physics)
Engine Terminology
Laws of Mechanics (Physics)
Lesson 2
YouTube - Dragsters Retrospectiva melhores momentos
March 2008

2. Laws of Mechanics Mass Matter Energy Inertia Force Momentum Torque
Work
Power

3. Mass Physical Size – Body Gravity does not effect size of mass
YouTube - Eureka! Episode 2 - Mass

4. YouTube - States of Matter
Three States Solid - Liquid – Gas
States of matter can be changed but not destroyed
YouTube - States of Matter

5. YouTube - Eureka! Episode 1 - Inertia
Tendency of a body (mass) to keep its state of rest or motion
YouTube - Eureka! Episode 1 - Inertia
Start 1:23 min

6. Momentum
Body in Motion

8. Which form of energy does not apply to engine dynamics?
Produces change in the state of matter
Which form of energy does not apply to engine dynamics?

9. Push or pull which starts, stops or changes motion of a body
Force
Push or pull which starts, stops or changes motion of a body

10. Turning or twisting force that causes a body to turn (rotate).
Torque
Turning or twisting force that causes a body to turn (rotate).

11. Torque = Length x Force Applied

12. When a body is moved by a force
Work
When a body is moved by a force
Measured in Ft. Lbs. (Nm)

13. Work = Distance Moved x Force Applied
YouTube - Eureka! Episode 8 - Work

14. Power Rate (Time - Speed) of doing work.
Measured in Ft.lbs. per second or minute.
(Metric =Watt or Kilowatt.)

15. Power = Distance (ft) x Force (lbs) Time (minutes)
‘Mechanical’ power is the rate work is being done by a mechanical device (engine)