Please tell me the answer of question 15
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Hello friend,
a)-Car lifter.
Car lifter is used to lift the car mostly found in mechanical room.In this pistons are used and force applied in small area piston rise the car on large area piston thus act as a force multiplier.
b)-Bridge.
In bridge,there are numbers vehicle arrived at a once but force exerted by bridge on supporter is very low.
Hence area of bridge is large but it exert less force on its supporter.
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Thank you,
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Chal bhag chupchap brainliest mar!
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