Question

A box of mass 308 kg weighs 623 N when submerged in a liquid of specific...

A box of mass 308 kg weighs 623 N when submerged in a liquid of specific gravity 3.36. Find the volume of the box, in m3.

Homework Answers

Answer #1

mass of the box. m=308kg


weight of the box, w=m*g


weight of the box in liquid, w'=623N


specific gravity of the liquid=3.36


rho_liquid/rho_water=3.36


rho_liquid/(1000)=3.36


rho_liquid=3360 kg/m^3

here,


density of the box is, rho=m*g*rho_liquid/(m*g-w)


use,

rho_box*w-rho_box*w'=rho_liquid*m*g

rho_box*m*g-rho_box*w'=rho_liquid*m*g

rho_box*308*9.8-rho_box*623=3360*308*9.8


=====> rho_box=4233.87 kg/m^3

now volume of the box, V_box=m_box/rho_box

=308/(4233.87)

=0.073 m^3

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