Studied by 14 peopleEfficiency
________: a measure of how much of the work put into a machine is changed into useful output work by the machine.
Gear
A(n) ________ is a wheel and axle with the wheel having teeth around its rim.
Energy
________ is always transferred from the object that is doing the work to the object on which the work is done.
Screw
Like the ________, the wedge is also a simple machine in which the inclined plane moves through an object or material.
Wedge
________: an inclined plane with one or two sloping sides.
Wheelbarrow
A(n) ________ is a second- class lever.
Car Jack
A(n) ________ is an example of a machine that increases an applied force.
Mechanical Advantage
________: The ratio of the output force to the input force.
Output Work
The ________ is the product of the output force and the distance over which that force is exerted.
System of Pulleys
A(n) ________ can change the direction of the input force and make the output force larger.
Power
________ is the rate at which work is done.
Input Work
The ________ is the product of the input force and the distance over which the input force is exerted.
Lever
________: a bar that is free to pivot or turn around a fixed point.
Work
the energy transferred 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
force that is applied to the machine
Output Force
The force applied by the machine
Mechanical Advantage
The ratio of the output force to the input force
Screw
an inclined plane wrapped in a spiral around a cylindrical post
Wedge
an inclined plane with one or two sloping sides
Compound Machine
Two or more simple machines that operate together
Note 
Flashcard (107)