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4. Which of these is a modified lever of the first class?(a) Wedge(b) Fixed pulley(c) Wheel and axle |
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Answer» A first-class lever is a beam, rod or stick with the load at one END, the FULCRUM in the middle and the force applied on the other end. A good EXAMPLE of a first-class lever is a CHILD's see-saw.Explanation: |
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