Second class lever - L oad is in the middle. įirst class lever - F ulcrum is in the middle. To recall the order of the levers use the term ' FLE ' - this will help you to remember which part of the lever is in the middle.

First class levers can have high mechanical advantage, if the fulcrum is close to the load. Second class levers always have high mechanical advantage. Levers with high mechanical advantage can move large loads with a relatively small amount of effort. When a lever's effort arm is longer than its load arm, it is said to have high mechanical advantage. Third class leverĭuring a biceps curl, the fulcrum is the elbow joint, the effort comes from the biceps contracting and the resistance is the weight of the forearm and any weight that it may be holding. Third class lever – the effort is in the middle between the fulcrum and the load. This second class lever is used when taking off for a jump or pushing against the blocks in a sprint start.ģ. When standing on tiptoe, the ball of the foot acts as the fulcrum, the weight of the body acts as the load and the effort comes from the contraction of the gastrocnemius muscle. This type of lever is found in the ankle area. Second class lever – the load is in the middle between the fulcrum and the effort.

The neck muscles provide the effort, the neck is the fulcrum, and the weight of the head is the load.Ģ. This type of lever is found in the neck when raising your head to head a football. First class lever – the fulcrum is in the middle of the effort and the load.

$third class work$

a load or resistance that is placed on the rigid structure (weight of body part being moved and anything that it is carrying)ġ.a fulcrum which is a fixed point (joint).a force acting upon it (muscle) to produce a turning movement (angular motion).Levers in our body are formed from bones, joints and muscles. First, second and third class levers in the body

Third class work