Gear Mechanics and Movement Analysis

A small gear with 8 teeth turns a larger gear with 24 teeth. If the small gear spins 3 times, how many times will the larger gear spin?

• 1

• 3

• 8

• 24

A machine uses a series of gears to change speed. If the first gear spins 375 times, how many times will the last gear spin if the total gear ratio is 375?

• 1

• 3

• 15

• 375

A worm gear is used to turn a 60-tooth gear. If the worm gear makes one full turn, how many teeth of the 60-tooth gear will move?

• 1

• 12

• 60

• 720

In a planetary gear system, if the ring gear has 140 teeth and the sun gear has 8 teeth, what kind of movement can the planet gears have?

• They can both spin and move around the sun gear

• They cannot move at all

What happens to the speed of the last gear in a very long chain of gears, compared to the first gear?

• It spins much faster

• It spins much slower

• It spins at the same speed

• It stops spinning