Question

6. A piece of aluminum with mass 1.00 kg and density 2 700 kg/m³ is suspended from a string and then completely immersed in a container of water. Calculate the tension in the string (a)

before and (b) after the metal is immersed.

Answer 1

a)

$F_1=mg=10~N,$

b)

$F_2=F_1-\frac{\rho_w}{\rho} m g=6.3~N.$