Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chapter 5 Vocab.

Work & Machines

TermDefinition
Work Transfer of energy that occurs when a force makes an object move; measured in joules.
Power Amount of work done, or the amount of energy transferred, divided by the time required to do the work or transfer the energy; measured in watts.
Machine Device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied.
Input Force The force that is applied to the machine.
Output Force The force applied by the machine.
Mechanical Advantage Ratio of the output force exerted by a machine to the input force applied to the machine.
Efficiency Ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage.
Simple Machine Machine that does work with only one movement-lever, pulley, wheel & axle, inclined plane, screw, & wedge.
Lever Simple machine consisting of a bar free to pivot about a fixed point called the fulcrum.
Pulley Simple machine that consists of a grooved wheel with a rope, chain, or cable running along the groove; can be either fixed or movable.
Wheel & Axle Simple machine that consists of a shaft or axle attached to the center of larger wheel, so that the shaft & the wheel rotate together.
Inclined Plane Simple machine that consists of a sloping surface, such as a ramp, that reduces the amount of force needed to lift something by increasing the distance over which the force is applied.
Screw Simple machine that consists of an inclined plane wrpped in a spiral around a cylindrical post.
Wedge Simple machine that is an inclined plane with one or two sloping sides.
Compound Substance formed from two or more elements in which the exact combination & proportion of elements is always the same.
Created by: keissyg