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## SIMPLE MACHINES

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### SIMPLE MACHINES A swift and easy way for you to learn all about the 6 simple machines!!! What is a Simple Machine? A simple machine is a machine with few or no moving ... – PowerPoint PPT presentation

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Title: SIMPLE MACHINES

1
SIMPLE MACHINES
• A swift and easy way for you to learn all about
the 6 simple machines!!!

2
What is a Simple Machine?
• A simple machine is a machine with few or no
moving parts.
• Simple machines help us by making work easier.
• Ex Pulley, Wedge, Inclined Plane, Screw, Wheel
and Axle.

3
• A mechanical advantage is the rate of the output
force\work to the input force\work.
• The mechanical advantage of a machine can be
found using this equation
• MA Output force (N)\Input force (N)

4
Inclined Plane
• An inclined pane is a sloping surface.
• Inclined planes help us by lifting large loads.
• Ex A ramp
• IMA length of slope (m)\height of slope (m)

5
Wedge
• A wedge is two inclined planes joined back to
back.
• Wedges are used to split things.
• Ex Axe or Knife

6
Pulley
• A pulley is a wheel that normally has a groove
around the outside edge. (The groove is for a
rope or belt to move around the wheel.)
• Ex Flag Pole

7
Screw
• A screw is an inclined plane wrapped around a
shaft or cylinder.
• Ex Jar lid and A bolt

8
Wheel and Axle
• A wheel and axle is a large wheel connected to a
cylinder (axle) so that they rotate together.
• Ex A doorknob and a combination lock

9
Levers
• A lever is a bar that is free to pivot\turn
around a point.
• There are 3 types of levers First-Class Levers,
Second-Class Levers, and Third-Class Levers.
• Ex Seesaw
• IMA Length of input arm (m)\ Length of output
arm (m)

10
How do Simple Machines help us?
• Simple machines help us by making work easier.

11
Credits
• By Tierra Dobbins
• Date 10-28-2011
• 4th Block