PLTW Unit 2 test review flashcards

Front

How many simple machines are there?

Back

6

Front

A gear ratio is.....

Back

The ratio of the sizes of two gears

Front

The MA of a gear train, the driver gear (input gear) is 10 N and the driven gear (output gear) is 60N? GR = N out/N IN

Back

6

Front

An idler gear allows ....

Back

Change in direction of rotation

Front

Which gear is the idler gear? (Refer to the image of three gears: red, blue, and gray)

Back

Blue

Front

If the driver (input) gear turns clockwise, the output or driven gear will turn:

Back

Counterclockwise

Front

The gear that is rotated by the driver gear is called the _______.

Back

output (or driven gear)

Front

If the output/driven gear is bigger than the input/driver gear, the output gear will spin _______.

Back

slower

Front

3D printing is an example of _______.

Back

additive manufacturing

Front

How does the mechanical advantage of a class 1 lever change based on the placement of the fulcrum?

Back

The mechanical advantage increases as the fulcrum moves closer to the load and decreases as it moves closer to the effort.