The balance - the lever

For the lever to be balanced, the arms' lengths must be inversely proportional to the weight ratio of the weights suspended on these arms. Complete the data: 30 cm, 10 cm, 4 kg, and m2 kg.

Final Answer:

m2 =  12 kg

Step-by-step explanation:

a=30 cm b=10 cm m1=4 kg  M1=M2 m1 a = m2 b a:b = m2:m1  m2=m1 ba=4 1030=104 30=10120=12 kg



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basic operations and conceptsUnits of physical quantitiesGrade of the word problem

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