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Adduction in anatomy is bringing the limb closer to the midline. For instance, when you do a jumping jack, you are ABducting when you bring your arms overhead, in a Y shape, and ADducting when you bring your arms back to your sides.
Hinge is a joint. It is designed to join two 'arms' together while letting them move freely. A lever is when a pivot, load, effort is present. Although hinge itself is not a lever, but taking our biceps as an example, that would be a Class 3 lever
volcanic arms
You are thinking of the baseball bat. The ball itself is not a lever. The bat is a lever, in the sense that it magnifies the motion of your arms.
Bones used in jumping jacks will be the bones of the arms and legs. The extremities will move when jumping jacks are done.
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When jumping ANY horse your arms should be tucked in and not out to the sides like chicken wings.
The pedal arms are levers, as are the hand-brake levers. These components meet the definition of a lever by being rigid arms that pivot at one point to apply force at another point when pressure is applied at a third point.
No. There was a 45
A rolling pin is not a lever when it is used in the conventional manner. The levers at work in this action are the arms of the user.
Yes. A bike will have several levers. The crank arms are levers, the brake levers are levers, the shifters are levers, the handle bar is a lever.
a cross-bar lug wrench