Definition:Lever/Type 3
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Definition
A type $3$ lever is a lever such that the effort is positioned between the load and the fulcrum:
Examples
Foot Treadle
A foot treadle on a treadle loom is an example of a type $3$ lever.
Its fulcrum is the pivot at which the treadle is attached to the floor
The effort is the force applied by the user to the treadle
The load is the reaction of the heddles being raised and lowered by the treadles.
Arm
An arm is an example of a type $3$ lever.
Its fulcrum is the elbow
The effort is the force applied by the muscle
The load is the reaction of the forearm being raised by the muscle.
Also see
- Results about type $3$ levers can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): lever
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): lever