1. One gram of lead has a mass of 11.3 g/cm 3 . What is its density? Two grams of aluminum have a mass of 5.4 g/cm 3 . What is the density of aluminum? 2. Which has the greater density—5 kg of lead or...

1. One gram of lead has a mass of 11.3 g/cm³. What is its density? Two grams of aluminum have a mass of 5.4 g/cm³. What is the density of aluminum?

2. Which has the greater density—5 kg of lead or 10 kg of aluminum?

3. The sketch shows a painter’s scaffold in mechanical equilibrium. The person in the middle weighs 250 N, and the