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Making WORK easier!

Making WORK easier!. Types of Simple Machines. Pulley. Inclined Plane. Lever. Wheel and axle. Wedge. Screw. Big Bang Theory clip. Ideal Mechanical Advantage - Pulley. I.M.A. = number of rope sections pulling upwards. IMA = 1. IMA = 2. IMA = 1

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Making WORK easier!

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  1. Making WORK easier!

  2. Types of Simple Machines Pulley Inclined Plane Lever Wheel and axle Wedge Screw Big Bang Theory clip

  3. Ideal Mechanical Advantage - Pulley I.M.A. = number of rope sections pulling upwards IMA = 1 IMA = 2

  4. IMA = 1 Changes direction of force so the work is easier (you are now working with gravity instead of against it) IMA = 2 Multipliesthe force by 2 so that you can lift something twice as heavy as you pull.

  5. Movable Pulley Single Fixed Pulley IMA = 2 IMA = 1

  6. What is the IMA of the following pulley system? • 1 • 2 • 3 • 4

  7. What is the IMA of the following pulley system? • 1 • 2 • 3 • 4 • 5

  8. Fe Fr Inclined plane Wout = Fr·dr Win = Fe·de

  9. Ideal Mechanical Advantage - Inclined Plane IMA = L h Big Bang Theory clip L h

  10. Wheel and axle I.M.A. = radius of wheel radius of axle

  11. Wedge • Two sloping sides – changes direction of the force

  12. Screw • A wedge with an inclined plane wrapped around it • More turns = higher mechanical advantage

  13. Frayer Model Examples: Non-examples: Essential Non-essential Characteristics: Characteristics: See-saw Wheelbarrow Crowbar Rake 1st class levers Effort force, Resistance force, and fulcrum present. Mechanical advantage is one or more. Makes work easier by multiplying the force. Fulcrum is between effort force and resistance force.

  14. Frayer Model Examples: Non-examples: Essential Non-essential Characteristics: Characteristics: Inclined Planes

  15. Works Cited http://www.uen.org/utahlink/activities/uploads/6528_a_screw.jpg http://www.beth.k12.pa.us/schools/wwwclass/mcosgrove/simplemachines.gif http://www.school-for-champions.com/science/images/machines4.gif http://www.ent.ohiou.edu/~bobw/html/HapEd/NASA/SimpMach/cl2lever.gif http://library.thinkquest.org http://www.the-office.com/summerlift/pulley1.gif http://encyclozine.com/Science/Physics/Machines/incline.gif http://www.fi.edu/pieces/knox/automaton/images/thewedge.gif http://www.worsleyschool.net/science/files/wheel/diagram1.gif http://www.metro-region.org/imageRepository/ACFQWB8ebaLm.gif http://www.ccohs.ca/images/MMH136.gif http://www.dynamicscience.com.au/tester/solutions/hydraulicus/animatedfourpulley.gif http://juniorengineering.usu.edu http://www.technologystudent.com/images3/lpulle23.gif http://www.sciencebuddies.org/mentoring/project_ideas/ApMech_img007.jpg http://www.gutenberg.org/files/16593/16593-h/images/image_110.jpg http://discover.edventures.com/images/termlib/s/screw/support.gif http://selland.boisestate.edu/jbrennan/physics/images/ http://members.aol.com/crummybut/splittingwood.jpg

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