Bicycle Warm Up Avctivity (Page 3 of 4) in pdf

Bicycle Warm Up Avctivity Page 3

For each of the remaining problems, assume that the bicycle has 2 gears in the front,

one of which has 30 teeth and the other 24. The bicycle also has 5 gears in the back,

with 8, 12, 16, 20, and 24 teeth.

4. Now list all the pairs of possible combinations of gears in the following format: (#

teeth on the front gear, # teeth on the rear gear). For instance, one

combination would be (30,12), indicating the 30-tooth front gear connected by

the chain to the 12-tooth rear gear. Enter the values in the table below. The first

example is entered already.

Number of

Gear

teeth in

combination

front gear

rear gear

(30,12)

Now that we have all the combinations of gears on our bicycle, we will learn

how to interpret how the ratio of the gears affects the action of the bicycle.

5. If a front gear had 24 teeth, and a rear gear has 12 teeth:

a. Each time the pedal goes around once, how many times does the rear

gear (and wheel) go around?

b. If the pedal goes around twice, how many times will the rear wheel go

around?

c. If the pedal goes around 4 times, how many times will the rear wheel go

around?

Bicycle Warm Up Avctivity Page 3