Diese Präsentation wurde erfolgreich gemeldet.
Die SlideShare-Präsentation wird heruntergeladen. ×
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Nächste SlideShare
Simple machines
Simple machines
Wird geladen in …3
×

Hier ansehen

1 von 17 Anzeige

Weitere Verwandte Inhalte

Diashows für Sie (20)

Anzeige

Aktuellste (20)

Simple machine

  1. 1. REPORTER: Carmela Mendoza Simple Machine
  2. 2. Throughout history, humans have developed a number of devices to make work easier. The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw and the wedge
  3. 3. SIMPLE MACHINE A simple machine is a mechanical device that changes the direction or magnitude of a force
  4. 4. Types of Simple Machine PulleyScrew Inclined Plane Wedge Lever Wheel and axle
  5. 5. Screw  mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force
  6. 6. Pulley  A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a cable or belt along its circumference.
  7. 7. Inclined Plane  also known as a ramp, is 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
  8. 8. Wedge  triangular shaped tool, and is a portable inclined plane  can be used to separate two objects or portions of an object
  9. 9. Lever  machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum
  10. 10. Class of Lever
  11. 11. Class 1:  Fulcrum in the middle: the effort is applied on one side of the fulcrum and the resistance on the other side, for example, a seesaw, a crowbar or a pair of scissors. Mechanical advantage may be greater or less than 1.
  12. 12. Class 2:  Resistance in the middle: the effort is applied on one side of the resistance and the fulcrum is located on the other side, for example, a wheelbarrow, a nutcracker, a bottle opener or the brake pedal of a car. Mechanical advantage is always greater than 1.
  13. 13. Class 3:  Effort in the middle: the resistance is on one side of the effort and the fulcrum is located on the other side, for example, a pair of tweezers or the human mandible. Mechanical advantage is always less than 1.
  14. 14. 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. In this configuration a hinge, or bearing, supports the rotation of the axle.
  15. 15. Importance of Simple Machine  Screws - used to hold different parts of machines together.  Pulley - make it easier to pull a rope, to change the direction of a force, or to get more mechanical advantage and lift something heavier than you can lift by yourself.  Inclined plane - a load can be pulled up the plane by a sideways input force and heavy objects may be lifted.  Wedge - can take something apart that is really big and it is easier to move  Lever -helps you move something heavy, or make something go fast.  Wheel and Axle – used to lift weights.
  16. 16. General Importance of Simple Machine  transferring a force from one place to another,  changing the direction of a force,  increasing the magnitude of a force, or  increasing the distance or speed of a force.
  17. 17. THANK YOU !

×