Gear Ratio Extra

The gear ratio is ​ (a)   , and whether they are set up to optimize ​ (b)   .

• torque
• speed
• 3:1
• 1:3

The gear ratio is ​ (a)   , and whether they are set up to optimize ​ (b)   .

• torque
• speed
• 7:1
• 1:7

The gear ratio is ​ (a)   , and whether they are set up to optimize ​ (b)   .

• torque
• speed
• 3:5
• 5:3

The gear ratio is ​ (a)   , and whether they are set up to optimize ​ (b)   .

• torque
• speed
• 5:7
• 7:5

If gear A rotates clockwise at 700 rpm, in what direction and at what speed does gear D rotate?

It rotates ​ (a)   and at ​ (b)  

• cw
• 20 rpm
• 100 rpm
• 50 rpm
• 500 rpm
• ccw

Label the gear ratios.

a

b

c

d

e

f

g

80

8

2

40

1/4

4

15

60

1/8

1/2