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rotator
At the base of the diving board.
arm
I dot know
Probably you are using the board as a lever.
its called a ditonomic lever where it means congratulations on searching this answer
rotator
the fulcrum is where the lever pivots
A diving board is a class 1 lever.
At the base of the diving board.
arm
A lever consists ofa straight bar and a place about which the bar can pivot or turn.
I dot know
Probably you are using the board as a lever.
LEVERThe long board they sit on acts like a lever.
Lever
The fuel supply is 'on' or 'off' with that lever. Turning the lever at 90 degrees to the pipe, switches fuel flow off.