Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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
remaining cards
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:
restart all cards

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 4 vocab

Work and machines

Work Exerting a force on an object that causes the object to move
Joule Work when you exert a force of 1N to move an object 1 meter
Power Rate at which work is done
machine device that allows you to do work in a way that is easier
input force force you exert on a machine
output force force the machine exerts
input work input force times he input distance
output work output force times the output distance
mechanical advantage ratio of output force to the input force
efficiency output work compared to input work
Inclined plane flat, sloped surface
Wedge device that is thick at one end and tapers to a thin edge at the other.
screw incline plane around a cylinder
Lever rigid bar that is free to pivot, or rotate, on a fixed point
fulcrum fixed point that a lever pivots around
wheel and axel two circular or cylindrical objects that rotate around a common axis
pulley a groved wheel with a rope or cable wrapped around it
compound machine machine utilizing two or more simple machines
Created by: SMoswald