Topic 2 - Wheel Axle and Pulley Flashcards
What is a Winch
Small cylinder that has a crank or handle. This is an example of a wheel axle device.
What is a Wheel and Axle
As long as there are two turning objects attached to each of their centers, and one causes the other to turn, it is a wheel axle device
What is a Gear
A rotating wheel like object with teeth around the rim
What is a Gear Train
A group of two or more gears. The teeth of one gear fit into the teeth of another gear. When one turns so does the other.
What is a DrIver Gear
(also called the driver): First gear, the one in which the initial force is applied.
What is the Follower Gear
Second gear, the one that gets driven
What are sprockets
A gear with teeth that fit into a chain, like on your bike.
How do you find the speed ratio
Speed Ratio= Number of driver gear teeth / Number of follower gear teeth