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 divided by its input work and multiplied by 100

Answer 2

Efficiently

Question 3

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

Answer 3

Simple machine

Question 4

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

Answer 4

Lever

Question 5

A fixed point that resists the motion between two surface in contact

Answer 5

Fulcrum

Question 6

A simple a 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 sloping surface, such as a ramp

Answer 8

Inclined plane

Question 9

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

Answer 9

Wedge

Question 10

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

Answer 10

Screw

Question 11

Any device that makes doing work easier

Answer 11

Machine