What Are 1st, 2nd and 3rd Class Levers?
Last Updated Apr 1, 2020 8:02:49 PM ET
The first class lever uses the fulcrum in between the applied force and load, the second class lever uses the load between the fulcrum and applied force and the third class lever uses the applied force between the fulcrum and the load. Levers help to lift heavy objects.
Levers are one of the simplest machines. An example of a first class lever is a seesaw or balance beam, an example of a second class lever is a wheelbarrow and an example of a third class lever is the human forearm. In the human forearm, the elbow acts as the fulcrum, the applied force is the bicep muscle and the hand acts as the load.
More From Reference
What Is the Financial Independence, Retire Early Movement — and Has the Pandemic Changed It?
4 Investing Lessons We Can Learn From Warren Buffett's Stock Portfolio
Here's How a Pre-IPO Investment Helps You Fund Startups
Where to Buy Cryptocurrency: A Guide for Beginners
The Question of Congressional Term Lengths and Limits
PPP Loan Forgiveness Requirements for Small Businesses