MACHINES

1
MACHINES

• Devices that make work easier by changing the
  size and/or the direction of the force. They
  will not do work for you.

2
SIMPLE MACHINES

• Machines that can do a task with one single
  movement.

3
SIMPLE MACHINES

• Lever
• Pulley
• Wheel and Axle
• Inclined Plane
• Screw
• Wedge

4
Lever

• A simple machine consisting of a bar that is free
  to pivot (rotate) around a fixed point called the
  fulcrum.
• Ex scissors, crowbar

5
Pulley

• A simple machine consisting of a grooved wheel
  with a rope running along the groove.
• Ex flagpole

6
Wheel Axle

• A simple machine consisting of two different
  sized wheels that rotate together.
• Ex door knob, steering wheel

7
Inclined Plane

• A simple machine consisting of a sloping surface
  or ramp used to raise objects.
• Ex loading ramp

8
Inclined Planes

• Mountain roads are inclined planes so that cars
  dont have to climb straight up. A definite
  advantage!
• Also, think about parking garages.

9
Screw

• A simple machine consisting of a special type of
  inclined plane wrapped in a spiral around a
  cylindrical post.
• Ex spiral staircase, screw

10
Wedge

• A simple machine consisting of a moving inclined
  plane with one or two sloping sides.
• Ex knife, chisel

11
Compound Machines

• A compound machine is a combination of several
  simple machines.
• Ex bicycle