PLTW Gears

Front

What is a gear ratio?

Back

The gear ratio is the ratio of the number of teeth on two meshing gears. It determines the relationship between the input speed and output speed of the gears.

Front

How do you calculate gear ratio?

Back

Gear ratio = Number of teeth on driven gear / Number of teeth on driving gear.

Front

What is the gear ratio of a 36 tooth driving gear and a 12 tooth driven gear?

Back

1:3

Front

What does a gear ratio of 1:3 indicate?

Back

It indicates that for every 1 rotation of the driving gear, the driven gear rotates 3 times, providing a speed advantage.

Front

What is the gear ratio of a 6 tooth input gear and a 48 tooth output gear?

Back

8:1

Front

What does a gear ratio of 8:1 indicate?

Back

It indicates that for every 8 rotations of the input gear, the output gear rotates once, providing a torque advantage.

Front

What happens to torque when speed increases in a gear system?

Back

Torque decreases when speed increases.

Front

What is mechanical advantage in gears?

Back

Mechanical advantage is the factor by which a mechanism multiplies the force put into it, often determined by the gear ratio.

Front

What is the gear ratio of a 12 tooth driving gear and a 36 tooth driven gear?

Back

1:3

Front

What is the significance of reducing ratios?

Back

Reducing ratios simplifies the relationship between gears, making it easier to understand their mechanical advantage.