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Asked by Martin

Auniform metre rule isbalanced at the 30cm mark when amass of 50g is hanging from its zero cm mark. Calculate weight of the rule.
3 years ago

Answers

Anonymous
ruler mass at 50 cm, 20 cm from pivot
50 g at 30 cm from pivot
50 * 30 = m * 20
m = 50 *3/2 = 75 g
3 years ago

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