(a) A pair of identical empty beakers are inserted into opposite ends of a scale. One beaker is
filled with one gallon of lead. The other beaker is filled with 10 gallons of water. A copper
sphere is suspended inside the water and supported by a string fixed outside the balance.
The scale is balanced. What is the volume of the copper cylinder?
(7 Marks)
H₂O
Balanced
Pb
Fig: 1