5.
(a) Calculate the buoyant force on 15,000 metric tons (1 ton =
1000kg) of solid steel (density 7.8 x 103 kg / m3) completely
submerged in water, and compare this with the weight of the steel.
(b) What is the maximum buoyant force that water could exert on
this same steel if it were in the shape of a boat that could
displace 1.75 x 105 m3 of water?