Simple Machines

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Simple Machines by Mind Map: Simple Machines

1. Work

1.1. activity involving mental or physical effort done in order to achieve a purpose or result.

1.2. Ex. 42 Joules

1.3. They relate to simple machines by showing how effective of how much they force it takes to move an object a certain distance

1.4. Formula: w=fd

2. Power

2.1. the ability to do something or act in a particular way, especially as a faculty or quality.

2.2. Ex. 42 watts

2.3. They show how much power using a simple machine produces

2.4. formula= p=w/t

3. Mechanical Advantage

3.1. the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.

3.2. Ex. 32

3.3. They show how effective simple machines are

3.4. Formula: output force/ input force

4. 1st class lever

4.1. lever in which the fulcrum is positioned between the load and the effort.

4.2. ex. A crowbar

4.3. It's used to pry something open

5. 2 class levers

5.1. A lever in which the load lies between the fulcrum and the effort

5.2. Ex. a wheel barrow

5.3. It's used to lift something and walk it over

6. 3rd class levers

6.1. A lever in which the effort is placed between the fulcrum and the load.

6.2. Ex. Someone using a broom

6.3. It's used to move something to somewhere

7. Incline Planes

7.1. a plane inclined at an angle to the horizonta

7.2. Ex. Someone walking up a inclined plane to get somewhere while using less power

7.3. It's used instead of stairs to lift something and walk it up

8. Wedge

8.1. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.

8.2. Ex. Walking up a wedge to use less power while lifting a box

8.3. It's used to hold something open

9. Screw

9.1. Image result for screw simple machine definition. An inclined plane wrapped around a shaft or cylinder.

9.2. Ex. A screwdriver screwing a screw

9.3. They are useful by tightening and looseniing something by just using a screwdriver and using less force to tighten something then when what it takes to pry it apart

10. Wheel and axle

10.1. a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.

10.2. Ex. Pulling a rope to move a desk

10.3. It's used by rolling something to somewhere

11. Pulley

11.1. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.

11.2. Ex. A pulling a pulley to move rocks

11.3. They are used by pulling a rope to pull an object up