Lever
A lever is a simple machine that provides mechanical advantage to magnify the force necessary to overcome a resistance .Levers are used in daily life. Levers are also used frequently in the games and sports. Our body also consists of many levers which are made up of bones and muscles. Our body parts such as legs, arms and fingers work on levers The levers of human body allow the body to move and generste fores. With the help of the levers, the work can be done easily. Different sport equipment such as bats, racquets also act as levers. Such types of levers allow the sportspersons to hit the objecta/balls faster and farther .In the field of games and sports, it is essential to know the mechanics of levers. It is also necessary to know how they work and allow sportepersons to perform efficiently. Every lever has a point at which the force is applied, a point of resistation and a fulcrum or axis.
Types of Levers
There are three types of levers, which play a vital role in sports and physical activities with a slight difference.
1.Class-1Lever:levers have the fulcrum between the effort (force) and load (resistance). Examples of class 1 levers are the playground see-saw, the action of rower's oar, where the force is applied by the rower, the fulcrum is the oarlock and the water offers the resistance (load), seated dumbbell triceps extension and hand grippers.
2.Class-2Lever:
levers have load (resistance) between the effort (force) and the fulcrum. Examples of class-2 levers are when an individual stands on tiptoe, the length of the foot is the arm of the lever, the ball of the foot acts as the fulerum and achilles, tendon and calf muscles provide the effort (force), lifting the weight of the body by the back of the heel and calisthenics that use the body as class-2 lever include push ups and leg lifts.
3.Class-3Lever:levers have the effort (force) between the load (resistance and the fulcrum. A lot of sports equipment use class-3 levers, including tennis racquets, baseball bats, boat paddles, etc. Our forearms also act as class-3 lever with the elbow as the fulcrum. A fishing pole is also a class-3 lever where hand at the end of the pole is the fulcrum and the fish you catch on the opposite e in the load and the hand between the fulcrum and the fish (load) applies effort (force) There are other examples of class-3 levers such as leg extension, seated bicep curi, hamstring curl, etc.
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