Chapter4 Flashcards
1
Q
Mechanical Advantage
A
Device the output force by the import force
2
Q
Efficiency
A
The ratio of its output work to the input work
3
Q
Simple machine
A
The six machines on which are based on other machines
4
Q
Lever
A
Solid bar that rotates or turns at a fixed point
5
Q
Fulcrum
A
The fixed point
6
Q
Wheel and Axle
A
A simple machine made of a wheel attached to a shaft or axle
7
Q
Pulley
A
A wheel with a grooved rim and a rope or cable that rides in a groove
8
Q
Inclined plane
A
A ramp is an Inclined plane
9
Q
Wedge
A
A simple machine that has a thick end and a thin end
10
Q
Screw
A
Inclined plane wrapped around a cylinder or cone to form a spiral
11
Q
Machine
A
Any device that helps people do work
