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What are levers ? State the differences between its different types with the help of examples. |
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Answer» Lever is one of the simplest machines. It used to lift the heavy stone. First order levers : In such type of lever the fulcrum (F) is situated somewhere in between the weight (W) and the effort (E). Example : crowbar, a pliers. Second order levers : In such a lever weight (W) is situated between fulcrum (F) and effort (E). Example : nut cracker, fruit cutter. Third order levers : The levers in which effort (E) is situated in between weight (W) and fulcrum (F) are called third order levers. Example : A pair of tongs, holding weight in a hand. |
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