• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/19

Click to flip

### 19 Cards in this Set

• Front
• Back
 efficiency can be calculated by comparing a machine's output work to its input work machine a device that changes the magnitude or the direction of a force compound machine consists of two or more simple machinces linked so that the resistance force of one machine becomes the effort force of the second machine resistance force the force exerted by a machine Watt a unit of power defined as 1 joule per second effort force the force exerted by a person on a machine work-energy therom states that the work done on an object equals the change in kinetic energy of the object energy the ability of an object to produce a change in itself or its surroundings kinetic energy the energy that results from the motion of an object power the rate of doing work mechanical advantage the ratio of the resistance force of a machine to its effort force joule the SI unit used for work ideal mechanical advantage comparison of a machine's effort distance to the resistance distance work calculated by multiplying an applied force by the distance through which the force is applied six simple machines lever, wheel & axle, pulley, inclined plane, screw, wedge 3 majors parts of a lever fulcrum - pivot point resistance - load to be lifted effort - the force used 1st class lever the fulcrum is the center with resistance and effort at the ends ex. crowbar, scissors 2nd class lever the resistance is in the middle with the fulcrum and effort at the ends ex. wheelbarrow 3rd class lever the effort is in the middle with the fulcrum and resistacne at the ends ex. fishing rod