By carly carlson
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Machines PowerPoint PPT Presentation


  • 113 Views
  • Uploaded on
  • Presentation posted in: General

By Carly Carlson. Machines. Simple And Complex Machines. Simple machine- A machine that changes the amount of force put in to motion, normally making a job easier There are 6 simple machines: lever, pulley, wheel and axle, inclined plane, screw, and wedge.

Download Presentation

Machines

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


By carly carlson

By Carly Carlson

Machines


Simple and complex machines

Simple And Complex Machines

  • Simple machine- A machine that changes the amount of force put in to motion, normally making a job easier

  • There are 6 simple machines: lever, pulley, wheel and axle, inclined plane, screw, and wedge.

  • A complex machine is made out of 2 or more simple machines (ex. Bicycle or an axe)


Lever

Lever

  • A lever is a simple machine that helps to lift weights.

  • An example of a lever is a hammer when pulling out a screw, a can opener, fishing rod, etc..

  • To calculate the Mechanical advantage you divide the effort arm by the resistance arm


Pulley

Pulley

  • Pulleys are used to reduce the amount of force needed to lift a load, uses a groove and a rope.

  • Pulleys are used on ships to lift and lower a sail.

  • The mechanical advantage of a pulley is found by dividing the output force by the input force


Wheel and axle

Wheel and axle

  • A wheel and axle is a lever that rotates around the fulcrum, the larger wheel rotates around the smaller wheel (axle)

  • An example of a wheel and axle is a Ferris wheel.

  • The mechanical advantage is found by dividing the radius of the wheel by the radius of the axle.


Inclined plane

Inclined Plane

  • An inclined planes is a flat, slanted surface used to raise an object

  • A commonly used example is a ramp used to lift heavy objects into trucks.

  • To find the mechanical advantage you divide the length by the height


Screw

Screw

  • A screw is a shaft with a groove or thread formed around the surface.

  • The more threading on the surface the greater the mechanical advantage.

  • Screws can raise weights, or press and fasten objects.

  • Ex: Archimedes water pump, or just a plain screw


Wedge

Wedge

  • A wedge is shaped like an inclined plane, and is normally used to separate or hold.

  • Ex: you can take a strong wedge and slam it into a log and break the wood.

  • Another example is a shovel or a knife splitting something open.

  • The mechanical advantage is found by dividing the length of the slope by the thickness at the big end.


Carly carlson 1 st period extra credit project 5 22 10

Carly Carlson1st periodExtra credit project 5/22/10


  • Login