a 1st class lever? a 2nd class lever? or a 3rd class lever?
pls answer, i am leaving my house in 30 mins!What kind of lever is a paint roller?
Used in a normal manner, it's a 1st. class lever.
The fingers form the pivot, the wrist applies the effort, and the roller is the load.
The pivot point is mainly between the thumb and index finger. The effort from the wrist is mainly applied via the rest of the fingers, especially the small one.
Hold a roller, apply some pressure to it, you will see what I mean.
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