Studied by 4 peopleEfficiency
________: a measure of how much of the work put into a machine is changed into useful output work by the machine.
IMA
The ________ can be calculated by dividing the input distance by the output distance.
Mechanical Advantage
________: The ratio of the output force to the input force.
Power
________ is the rate at which work is done.
car jack
A(n) ________ is an example of a machine that increases an applied force.
Wedge
The ________: an inclined plane with one or two sloping sides.
second class lever
For a(n) ________, the output force is located between the input force and the fulcrum.
system of pulleys
A(n) ________ can change the direction of the input force and make it larger.
class lever
For a first- ________, the fulcrum is located between the input and output forces.
third class lever
For a(n) ________, the input force is applied between the output force and the fulcrum.
gear
A(n) ________ is a wheel and axle with the wheel having teeth around its rim.
Lever
________: a bar that is free to pivot or turn around a fixed point.
input work
The ________ is the product of the input force and the distance over which the input force is exerted.
output work
The ________ is the product of the output force and the distance over which that force is exerted.
Oil
________ reduces the friction between two surfaces.
Work
the transfer of energy that occurs when a force makes an object move
Power
the amount of work done in one second
Machine
a device that makes doing work easier
Input Force
The force that is applied
Output Force
The force applied by the machine
Mechanical Advantage
The ratio of the output force to the input force
Efficiency
a measure of how much of the work put into a machine is changed into useful output work by the machine
Simple Machine
a machine that does work with only one movement of the machine
Lever
a bar that is free to pivot or turn around a fixed point
Wheel and Axle
a simple machine consisting of a shaft or axle attached to the center of a larger wheel, so that the wheel and axle rotate together
Inclined Plane
A sloping surface, such as a ramp that reduces the amount of force required to do work,
The Screw
an inclined plane wrapped in a spiral around a cylindrical post
The Wedge
an inclined plane with one or two sloping sides
Compound Machine
Two or more simple machines that operate together
Note 
Flashcard (156)