the shoulder is the fulcrum and the load is the rest of the arm. the deltoid muscle is lifting the load away from the body from a point closer to the fulcrum, so it is a class 3 lever.
LEVER 1: Belief systems LEVER 2: Boundary system LEVER 3: Diagnostic control system LEVER 4: Interactive control system
the long bones in the arm pivot around the elbow like a lever! off of Plato learning.com
The pivot point of a lever system is called the fulcrum.
Archimedes described and explained how it works, but discovered? Probably some caveman.
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.
Third-class lever
Third-class lever
enduance
LEVER 1: Belief systems LEVER 2: Boundary system LEVER 3: Diagnostic control system LEVER 4: Interactive control system
The pivot point of a lever system is called the fulcrum.
The handles of a wheelbarrow would be the lever of the machine system. The wheel would be the fulcrum or center point. The part of the wheelbarrow that is used as a lever system is the operator. The operator lifts the handles and creates a lever.
the long bones in the arm pivot around the elbow like a lever! off of Plato learning.com
wheel and axle
The pivot point of a lever system is called the fulcrum.
pulley
Because to actuate the brake you pull at the brake lever.
Archimedes described and explained how it works, but discovered? Probably some caveman.