Study your flashcards anywhere!

Download the official Cram app for free >

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

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




Click to flip

20 Cards in this Set

  • Front
  • Back
resistance arm
the part of the lever that exerts the resistance force
a simple machine consisting of a special type of inclined plane wrapped in a spiral around a cylindrical post.
wheel and axle
a simple machine consisting of 2 different-sized wheels that rotate together, such as a doorknob or wheel-handled faucet.
resistance force
the force exerted by a machine to overcome resistance to gravity or friction
A simple machine consisting of a moving inclined plane with one or two sloping sides; examples are knife and chisels
How many simple machines are there? Name them.
lever, pulley, wheel and axle, inclined plane, screw, wedge.
simple machine
a device that accomplishes work with only one movement.
a simple machine consisting of a grooved wheel with a rope or chain running along the groove
The science of designing artifiacial replacement (prostheses parts for the body.
compound machine
A combination of 2 or more machines
ratio of the useful work put out by a machine to the work put into that machine; effeiciency is always less than 100%
effort arm
the part of a lever on which an effort force (F ) is applied
the measure of the amount of work done in a specific amount of time; power is measured in watts and equals 1 joule/second
mechanical advantage
the number of times a machine multiplies the effort force applied to it.
effort force
the force applied to a machine when a machine is used to do work.
a device that makes work easier by changing the size of the force applied to it and /or the direction of that force.
the fixed point around which a lever pivots
ideal machine
a machine in which work input equals work output; such a "perfect" machine would be frictionless and 100% efficient
inclined plane
a simple machine consisiting of a sloping surface (ramp) used to raise objects
a simple machine consisting of a bar that is free to pivot (rotate) around a fixed point (fulcrum)