Gears can serve as an efficient means to reverse the direction of motion, change rotational speed, or to change which axis the rotary motion is occurring on. The sizes of the gears usually depend on the desired gear ratio and the shaft upon which the gears will be mated.
What are 2 benefits of gears?
Advantages of Gear drive
- It is positive drive hence velocity remains constant.
- Provisions for changing velocity ratios can be made with the help of gear box.
- Its efficiency is very high.
- It can be used even for low speeds.
- It can transmit high torque values.
- It is compact in construction.
How do gears help us?
Gears are wheels with teeth that slot together. When one gear is turned the other one turns as well. If the gears are of different sizes, they can be used to increase the power of a turning force. ... Cars and bicycles use gears to achieve amazing speeds our bodies could never match without help.
