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11PHE Exam practice answers

11PHE Exam practice answers. 2011. Explain in detail how and why the biomechanical principle (LEVERS) improves your volleyball skills.

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11PHE Exam practice answers

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  1. 11PHE Exam practice answers 2011

  2. Explain in detail how and why the biomechanical principle (LEVERS) improves your volleyball skills. • In volleyball we use 2nd and 3rd class levers. There are three distinctive parts of a lever, which are the fulcrum, the load and the effort. Levers are used to apply a force. • 3rd class levers relate to volleyball through a dig, the fulcrum in a dig is shoulder flexion using the ball and socket joint. The effort is the agonist muscle, which is the deltoid anterior. The load is the ball. A 2nd class lever is used when jumping and preparing for a spike. The fulcrum in the jump is the phalanges, the effort is the gastrocnemius and the load is the mass. • Newtons 3rd law is relevant to the dig. Newtons 2nd law is also important to volleyball, because the harder the ball is hit the further it will move. • Levers are important in volleyball because they help to apply a force. The result of a force is a motion. Longer levers are important in volleyball because the increase the speed of the load. An example of this is when a spike is being used, the harder you hit it the harder and faster the ball will travel. Also when you use a longer lever to make the ball go up, the ball will travel higher in order for the ball to go over the net. A longer lever is important in the jump so that we can get as high up the net as possible, so we have the best chance of a winning spike.

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