define a machine.write a short note on lever and make neat diagram.
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A lever is a simple machine made of a rigid beam and a fulcrum. The effort (input force) and load (output force) are applied to either end of the beam. The fulcrum is the point on which the beam pivots. When an effort is applied to one end of the lever, a load is applied at the other end of the lever.
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A piece of equipment with moving parts that is designed to do a particular job. A machine usually needs electricity,gas,steam,etc. in order to work.
The liver is a organ only found in vertebrates which detoxifies various metabolite,synthesizes proteins and produces biochemicals necessary for digestion and growth. In humans, it is located in the Right Upper Quadrant of the Abdomen, below the Diaphragm.
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