Chapter 5- Work and Simple Machines Flashcards
1
Q
Work
A
Transfer of energy that occurs when a force makes something move
2
Q
Power
A
Amount of work done in one second
3
Q
SI unit for work
A
Joule
4
Q
SI unit for power
A
Watt
5
Q
Machine
A
Device that makes work easier
6
Q
Input Force
A
force applied to machine
7
Q
Output Force
A
force applied by machine
8
Q
Six Machines
A
Lever, Pulley, Wheel and Axle, Inclined Plane, Screw, Wedge
9
Q
3 Classes of Levers
A
1- OFI 2-IOF 3-OIF
10
Q
Mechanical Advantage
A
ratio of output force to input force
11
Q
Ideal Mechanical Advantage
A
Mechanical Advantage without friction
12
Q
Efficiency
A
measure of how much work is changed into useful output
