A block of iron is suspended from one end of an equal-arm balance by a thin wire. To balance the scales, 2.35 kg are needed on the scale pan at the other end.
A) What is the volume of the block?
B) Next, a beaker of water is placed so that the iron block, suspended as in part (A), is submerged in the beaker but not touching the bottom as seen in the picture. What mass is now necessary to balance the scales?