A diving board is a class 1 lever.
class 3
Class 1 lever
Class 3 Lever! You Don't even know that!
no. a catapult is a class-3-lever not a class-1-lever.
no, its is second class lever.
Class 1.
The biceps is a class 3 lever
class 3
No. It's an example of a Second Class lever.
Ice tongs are actually third class lever. In a third class lever, the effort is between the fulcrum and the load.
A crane is a first class lever when it is winching in or out the rope attached to a load. The crane becomes 3rd class lever when it's boom is luffing, i.e. it is being lowererd or raised.
A pen is a class 3 lever - the effort is applied between the load and the fulcrum.