Simple Machines

Question 1

The number of times a machine multiplies the input force; output force divided by input force

Answer 1

Mechanical Advantage

Question 2

The percentage of input work done on a machine that the machine can return in output work

Answer 2

Efficiency

Question 3

One of the basic machines on which all other mechanical machines are based

Answer 3

Simple Machines

Question 4

A solid bar that rotates, or turns, around a fixed point

Answer 4

Lever

Question 5

A fixed point around which a lever rotates

Answer 5

Fulcrum

Question 6

A simple machine that is a wheel attached to a shaft, or axle

Answer 6

Wheel and Axle

Question 7

A wheel with a grooved rim that turns on an axle

Answer 7

Pulley

Question 8

A simple machine that is a sloping surface, such as a ramp

Answer 8

Inclined Plane

Question 9

A device that makes doing work easier

Answer 9

Machine

Question 10

A simple machine that has a thick end and a thin end

Answer 10

Wedge

Question 11

A simple machine that is an inclined plane wrapped around a cylinder

Answer 11

Screw