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A body of mass x gram suspended at the 15cm mark of a ruler balanced it at the 30cm mark on a pivot. If the ruler has a mass of 36g and its centre of gravity is 55cmmark, calculate the (i) mass x (ii) distance of the balanced point of the ruler from the zero end when the body is moved to the 25cm mark.​
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A body of mass x gram suspended at the 15cm mark of a ruler balanced it at the 30cm mark on a pivot....
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