# Machines Science

The flashcards below were created by user sbenrud on FreezingBlue Flashcards.

1. Work equals?
force X distance
2. Force equals?
Work/distance
3. Distance equals?
work/force
4. Work is measured in?
Joule
5. joule?
What work is measured in
6. Power?
The rate at which work is done
7. The rate at which work is done?
power
8. Power equals?
work/time
9. Work/time equals?
power
10. 1 horsepower equals?
746 watts
11. 746 watts equals?
1 horsepower
12. What is a simple machine?
A device that helps make work easier to perform.
13. A device that helps make work easier to perform?
A simple machine.
14. Simple machines accomplish?
• A change in direction
• An increase in magnitude or force
• An increase in distance or speed or force
15. Machines CANT do what?
They can't increase the amount of work you do!!!!!!!!!!!!!!!!!!!!
16. Work input?
Work done ON machine. (the force and distance YOU apply to a machine)
17. Work done ON machine (the force and distance YOU apply to a machine)
Work input
18. Work output?
Work done BY the machine (the force and distance the machine does)
19. Work done BY a machine (the force and distance the MACHINE does)
Work output
The number that tells how many times a machine multiplies force
21. The number that tells how many times a machine multiplies force?
output force / input force
23. output force / input force
24. Mechanical efficiency?
Compares machines work output with it's work input
25. Compares machines work output with it's work input
Mechanical efficiency
26. Mechanical efficiency equation?
(work output / work input) x 100%
27. (work output / work input) x 100%
Mechanical efficiency equation
 Author: sbenrud ID: 211971 Card Set: Machines Science Updated: 2013-04-07 20:05:29 Tags: Science words Folders: Description: Test Show Answers: