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# Simple machines

1. Mar 2019
1 von 13
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### Simple machines

1. Simple Machines (A PowerPoint Presentation)
2. What I am expecting to happen? ▪ To learn what is the meaning of Simple Machine ▪ To learn what is the meaning of each Simple Machine ▪ To learn what are the examples of each Simple Machine ▪ To learn what are the uses of each Simple Machine
3. WHAT IS THE MEANING OF SIMPLE MACHINE? Simple Machine- any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
4. WHAT ARE THE SIMPLE MACHINES? ▪ Inclined Plane ▪ Lever ▪ Wheel and Axle ▪ Gear ofWheels ▪ Pulley ▪ Wedge ▪ Screw
5. WHAT IS INCLINED PLANE? Inclined Plane- is a surface that is higher at one end than at the other. It is used to increase the elevation of a heavy object without lifting the object directly.
6. WHAT IS LEVER? Lever- is a rigid bar that is free to turn about a fixed point called the fulcrum.
7. WHAT IS WHEEL AND AXLE AND GEAR OF WHEELS? Wheel and Axle- is essentially two wheels, the larger called the wheel and the smaller the axle, joined together and turning about a common axis. Gear of Wheels- which an extension of the principle of the wheel and axle, can act as multipliers of either force of speed.
8. WHAT IS PULLEY? Pulley- is a wheel that turns readily on an axle, which is mounted in a supporting frame called a block. Pulleys may be fixed or movable. A fixed pulley acts as a first- class lever, while a movable pulley acts as a second-class lever.
9. WHAT IS WEDGE? Wedge- is essentially a double inclined plane. It differs from the inclined plane in that it s intended to be pushed under or into the load instead of having the load pushed or pulled up along the plane.
10. WHAT IS SCREW? Screw- is essentially an inclined plane wrapped around a cylinder to form a helical thread.
11. ACKNOWLEDGEMENTS We just want to thank the following: ▪ Microsoft’s PowerPoint 2016 ▪ Corel ScreenCap X7 ▪ JC’s “Simple Machines” Chart ▪ Google ▪ Google Images
12. SUMMARY ▪ Simple Machine- any basic machine that helps us in our daily lives. ▪ Inclined Plane-use to transfer an object without directly lifting it. ▪ Lever- a rigid bar that is free to turn. ▪ Wheel and Axle- composes of two wheels ▪ Gear of Wheels- extension of the principle of the wheel and axle. ▪ Pulley- a wheel that turns readily on an axle ▪ Wedge- essentially a double inclined plane. ▪ Screw- essentially an inclined plane wrapped around a cylinder.
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