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small effort exerted over a relatively large distance can be used to move a large load over a small distance
the load is far from the fulcrum and the effort is applied near the fulcrum the force exerted by a muscle must be greater than the load to be moved or supported
first class lever
the effort is applied at one end of the lever and the load is at the other, with the fulcrum somewhere between. (speed and distance)
second class lever
the effort is applied at one end of the lever and the fulcrum is located at the other, with the load between them (strength)
OR: occipital bone and all cervical and thoracic vertebra IN: spine of scapula and clavicle
OR:clavicle, sternum, 2nd and 6th costal cartilages IN: intertubercular groove of humerus
OR: ilium, femur IN: patellar tendon that contiues as a ligament to the tibial tuberosity
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