Exercise

Topic: Buoyancy

Question $1$

An object weighs $100$ N in the air and $25$ N when submerged in water. Calculate its volume and specific weight

Ans: $7\mathrm{.}64{10}^{-3}{m}^3,13\mathrm{.}089\frac{N}{m^3}$

Question $2$

A car ferry is essentially rectangular with dimensions $7\mathrm{.}5$ m wide and $90$ m long. If $60$ cars, with an average weight per car of $15$ tonnes are loaded on the ferry, how much farther will it sink into the water?

Ans: $0\mathrm{.}136$ m

Question $3$

A $30$ m long vessel, with cross section shown below carries a load of $6000$ kN $.$ How far will the water level be from the top of the vessel if its mass is $100000$ kg $?$

Ans: $0\mathrm{.}535$ m