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.
Answers
Answered by
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
50 g at 30 cm from pivot
50 * 30 = m * 20
m = 50 *3/2 = 75 g
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