1. Transmission and transformation of motion
Carry the motion over a distance
And
Change the type of motion

2. Transmission of motion
A group of simple machines can work together to make a system.
A system can transmit or carry the motion from one object to another.
Sometimes they are close together.
Sometimes they are far away.

3. Here are the different systems
Chain and sprocket
Just like on your bicycle
Your feet turn and move the big sprocket
then the chain carries the circular motion to the little sprocket on the back wheel and makes the bike go

4. Belt and pulley
You pull on the rope and it carries the motion to bring in the clothes.
Both pulleys turn in the same
Direction. The clothes move in a
straight line

5. gears Gears are toothed wheels
They can transmit the motion and change it’s direction.
Like an egg beater or a clock

6. Friction wheels Are a lot like gears but with no teeth
They turn in opposite directions.
One wheel turns the other because of the friction where they touch

7. Pulley systems These systems transmit rectilinear motion.
You pull one rope and it goes through the pulleys and lifts a heavy object in a linear direction.

8. Now
answer the memory questions on p 422

9. Types of motion There are 4 kinds of motion: Rectilinear Alternation
Circular
Oscillatory

10. Transformation of motion
Is when you can change 1 kind of motion into another.
You pin wheel changes circular motion in to linear motion

11. Here are some other systems that do that
Rod and crank changes circular motion into alternation motion to
Drive your car or a train

12. Cam and follower
Changes circular motion into alternating motion the egg shaped cam is close to the rod then far from the rod as it turns

13. Rack and pinion Changes circular motion to rectilinear motion
You turn the focus knob and the lenses go up and down on the microscope.

14. Screw and nut This changes circular into rectilinear motion.
It can be used to lift you ceiling
or squeeze
or even change a tire.

15. Now
do the memory check questions on page425