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Simple machines

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Project in Science. Simple Machines

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Simple machines

  1. 1. Submitted by: Keanne Lyxie A. Lim Submitted to: T. Nerissa Gonzales
  2. 2. SIMPLE MACHINES - Object that make our work easier or faster and consists of only one moving part.
  3. 3. TYPES OF SIMPLE MACHINES o Levers o Pulley o Wheel and Axle o Inclined Plane o Gears o Wedge
  4. 4. LEVERS -consisting of a bar and fulcrum used to multiply force or speed to move another object. Three types of a lever: •First-class lever •Second-class lever •Third-class lever
  5. 5. FIRST-CLASS LEVERS - Type of lever having the fulcrum between the load and effort applied. - Multiplies force and changes direction.
  6. 6. EXAMPLES OF FIRST-CLASS LEVERS
  7. 7. SECOND-CLASS LEVERS -Type of a lever having the load between the fulcrum and the effort applied. - Multiplies force but doesn't change it’s direction.
  8. 8. EXAMPLES OF SECOND-CLASS LEVERS
  9. 9. THIRD-CLASS LEVERS -Type of a lever in which the effort is placed between the fulcrum and the load. - Multiplies speed of force.
  10. 10. EXAMPLES OF THIRD-CLASS LEVERS
  11. 11. Pulleys - A simple machine consisting essentially of a wheel with a grooved rim in which a pulled rope or chain can run to change the direction of the pull and there by lift a load. Three types of Pulleys: •Fixed Pulley •Movable Pulley •Pulley System
  12. 12. FIXED PULLEYS -A device consisting of a wheel rigidly fixed to a shaft that is used with a belt to transmit energy and motion to another fixed pulley. - Changes the direction of the applied force.
  13. 13. EXAMPLES OF FIXED PULLEYS
  14. 14. MOVABLE PULLEYS - A device consisting of a shell, a moveable wheel, and a rope that is used to raise a load. - Reduce the force applied.
  15. 15. EXAMPLES OF MOVABLE PULLEYS
  16. 16. PULLEY SYSTEMS or BLOCK and TACKLE - A pulley system uses ropes and wheels to redirect the application of force and/or to gain mechanical advantage. - Multiply the force applied to reduce a greater force to lift a load.
  17. 17. EXAMPLES OF PULLEY SYSTEMS
  18. 18. WHEEL AND AXLE - The wheel and axle is generally considered to be a wheel attached to an axle so that these two parts rotate together in which a force is transferred from one to the other - Multiply the force applied to produce a greater force.
  19. 19. EXAMPLES OF WHEEL AND AXLE
  20. 20. INCLINED PLANE - A flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. - Reduce the force applied.
  21. 21. EXAMPLES OF INCLINED PLANE
  22. 22. GEARS - A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. - Change the direction of the force applied.
  23. 23. EXAMPLES OF GEARS
  24. 24. WEDGES - a simple machine used to separate two objects, or portions of objects, through the application of force. - Multiplying the force applied.
  25. 25. EXAMPLES OF WEDGES
  26. 26. PRECAUTIONARY MEASURES IN USING SIMPLE MACHINES 1. Use the right type of simple machine for the right job. 2. Secure pulleys properly before using them. And make sure that the it is tightly tied on the support. 3. Simple machines that are sharp should be handled with care also cover the sharp edges. Do not leave sharp objects exposed.

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