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Simple Machines

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Page 1: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Simple Machines

Page 2: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Definitions

• Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force

• Effort– work put into a machine also know as work in or win

• Load—work done by the machine, also know as work out or wout

• Mechanical Advantage (MA)—Force out/force in• Efficiency=(Work out/work in) * 100%

Page 3: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Simple machines

• Simple machines do a lot of things, but one thing they never do is multiply work. Why is that?

• A compound machine occurs when you put more than one simple machine together.

Page 4: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Levers 1st class

Page 5: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Levers 1st class

Page 6: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever 2nd class

Page 7: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever 2nd class

Page 8: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever 3rd class

Page 9: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever 3rd class

What advantages does this type of lever have?

Page 10: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Levers in Action

• How a backhoe works

http://www.youtube.com/watch?v=A5apkHRPyX0
Page 11: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever --Wheel and Axle

Page 12: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever --Wheel and Axle

Page 13: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever --Pulley

Page 14: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever --Pulley

Page 15: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined plane

• Ramp• Screw • Wedge

Page 16: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Lever Ramp

Page 17: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined Plane --Ramp

Page 18: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined plane --Screw

Page 19: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined plane --Screw

Page 20: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined plane --wedge

Page 21: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Inclined plane --wedge

Page 22: Simple Machines. Definitions Simple machine—A machine that makes work easier by multiplying a force or changing the direction of a force Effort– work

Wedge—Hull Design


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