Thursday, August 1, 2019

Pulley


We just learned about the Sprocket that has teeth like a gear, but is made for a chain.

Another type of wheel that is used in machines is a Pulley.

Just like a gear or sprocket it is a wheel that spins for a machine, but the outside of a pulley does not have any teeth.
It has a cable, rope or belt around it that spins around the wheel.

Sometimes a pulley wheel is flat, and sometimes it has a groove for the rope to try and hold the rope or cable in the right place.


(from: wikipedia - pulley)


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