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13y ago

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Is your arm a first class lever?

The biceps is an example of a class 3 lever. The triceps is an example of a class 1 lever.


Is a wheelbarrow first class lever second class lever third class lever or fourth class lever?

A wheelbarrow is a second-class lever. In a second-class lever, the load is between the effort (force) and the fulcrum, which allows for a mechanical advantage in lifting and moving heavy loads with less effort.


What class of lever are scissors?

First Class LeverIt is a First class lever.


Why is a fishing pole a 3rd class lever?

A third class lever is a lever where the force is applied between the fulcrum and the load. A fishing rod is a third class lever if it is fixed at the base and the hand holding the rod is between that fulcrum and the other end of the rod. It is also a third class lever by extension of your arm, wherein the fulcrum is your elbow and the force is your biceps or triceps muscle, which attaches close to that fulcrum.In a limiting case, a fishing rod is a first class lever if it is supported between the ends and you hold it at a point beyond that fixed fulcrum. This is not common, I think.


What class lever is a screw?

The biceps brachii acts as a class 3 lever to flex the arm. The deltoid also acts as a class 3 lever to abduct the arm, as does the teres major in adducting the arm. The triceps brachii, however, acts as a class 1 lever to extend the arm. In other words, when you're bending your arm or swinging it toward your body or away from your body, it's a class 3 lever. But if your arm is bent and you're straightening it, then your arm is a class 1 lever.