Pulley
Madi P & Mika B
What is a Pulley?
A circular lever that consists of a grooved wheel rotating about a hub
Examples Used In The Real World
- Fish rod
- Elevators
- Flag poles
- Bikes
- Fishing boat
- Belt and motors
The Mechanical Advantage
If it's just a single pulley system the work done is still the same as if with out it. But if it is a multi pulley system the work done decreases.
3 different formulas and ways!
- AMA= Output Force/ Input Force
- Counting ropes not including the rope you pull
- IMA= Input Distance/ Output Distance
Problem
- You're trying to lift a box that is 100N using a pulley with two support ropes. What is your MA?