Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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 email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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 8 Vocab

Chapter 8 Vocab.

pulley a smiple machine that consists of a wheel over which a rope, chain, or wire passes
Lever a simple machine that consists of a bar that pivots at a fixed point called a fulcrum
wedge a simple machine that is made up of two inclined planes and that moves; often used for cutting
screw a simple machine that consists of a inclined plane wrapped around a cylinder
wheel && axle a simple machine consiting of two circular objects of different sizes; the wheel is the larger of the two circular objects
inclined plane a simple machine that is a straight, slanted surface, which facilitates the raising of loads; a ramp
machine a device that helps do work by either overcoming a force or changing the direction of the applied force
work input the work done on a machine; the product of the input force and the sitance through which the force is exterted.
work output the work done by a machin; the product of the output force and the distance through which the force is exerted
mechanical advantage a number that tells how many time a machine mulitples force
mechanical efficiency a quantity usually expresed as a percentage, that measures the ratio of work output to work input; it can be calculated by dividing work output by work input
compound machine a machine made of more than one simple machine
power the rate at whihch owkr is done or envergy is transformed
watt the unit used to express pwer; equivalent to joules per second (symbol W)
Work the transfer of energy to an object by using a force that causes the object to move in the direction of the force
joule the unit used to express energy; equivalent to the amount of work done by a force of 1 n acting through a distance of 1 m in the dircestion of the force (symbol J)
Created by: SloaneSarabia16