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Wheelbarrow A wheelbarrow is a classic example of a second-class lever. The fulcrum of a wheelbarrow is at the wheel which is usually on the extreme front. The use of the wheelbarrow exerts effort on the handles which are behind the placement of the load.

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Wheelbarrow A wheelbarrow is a classic example of a second-class lever. The fulcrum of a wheelbarrow is at the wheel which is usually on the extreme front. The use of the wheelbarrow exerts effort on the handles which are behind the placement of the load.

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Pulling a nail out of a wooden plank also represents a first-class lever. In this, the fulcrum is at one end and the force applied is on the other end.

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Your jaw works as a third-class lever when you use your front teeth to bite.

The fulcrum is the joint where the lower jaw connects to the skull.

The load is the food or item you are biting on and the effort is the force applied by the muscles of your face to close the jaw.

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Listen to Darraghmcparland | SoundCloud is an audio platform that lets you listen to what you love and share the sounds you create.

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A car jack is used to lift a car in order to access its undercarriage.A car jack features a rod (beam) on which you apply force. The car is the load and the jack’s body is the fulcrum.The fulcrum lies between the load (the car) and the force.

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A car jack is used to lift a car in order to access its undercarriage.A car jack features a rod (beam) on which you apply force. The car is the load and the jack’s body is the fulcrum.The fulcrum lies between the load (the car) and the force.

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When using a bottle opener to open a bottle, it will function as a second-class lever.

In this case, the fulcrum will be at the end of the bottle opener that is placed on the head of the crown.

The fulcrum is created by the movement of the hand as you apply force and push the opener up to remove the crown from the bottle.

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A lever consists of:

a rigid structure (bone)

a force acting upon it (muscle) to produce a turning movement (angular motion)

a fulcrum which is a fixed point (joint)

a load or resistance that is placed on the rigid structure (weight of body part being moved and anything that it is carrying)

There are three types of lever.

1. First class lever - the fulcrum is in the middle of the effort and the load.

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

2. Second class lever - the load is in the middle between the fulcrum and the effort.

This type of lever is found in the ankle area. 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 second class lever is used when taking off for a jump or pushing against the blocks in a sprint start.

3. Third class lever - the effort is in the middle between the fulcrum and the load.

During 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.

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First, second and third class levers in the body - Movement analysis in sport - Eduqas - GCSE Physical Education Revision - Eduqas - BBC Bitesize

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A lever consists of: a rigid structure (bone) a force acting upon it (muscle) to produce a turning movement (angular motion) a fulcrum which is a fixed point (joint) a load or resistance that is placed on the rigid structure (weight of body part being moved and anything that it is carrying) There are three types of lever.

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Boats and boating--Equipment and supplies

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Barbecue tongs. Barbecue tongs are a third-class lever. The fulcrum (the bend) is at one end of the tongs. The load (the meat) is at the other end.

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Wheelbarrow. A wheelbarrow is a classic example of a second-class lever. The fulcrum of a wheelbarrow is at the wheel which is usually on the extreme front.

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Our hand pushing an object or seesaws, crowbars. Using scissors represents the use of two first-class levers. A wheel and axle is also an example. Pulling a nail out of a wooden plank also represents a first-class lever. In this, the fulcrum is at one end and the force applied is on the other end.

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Our hand pushing an object or seesaws, crowbars. Using scissors represents the use of two first-class levers. A wheel and axle is also an example. Pulling a nail out of a wooden plank also represents a first-class lever. In this, the fulcrum is at one end and the force applied is on the other end.

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The two arms of scissors are joined by a pinpoint (fulcrum).In order to cut anything, force is applied to the arms.This force is carried over the fulcrum to the blades on the other end of the arms, allowing you to cut an object (the load).

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The two arms of scissors are joined by a pinpoint (fulcrum).In order to cut anything, force is applied to the arms.This force is carried over the fulcrum to the blades on the other end of the arms, allowing you to cut an object (the load).