An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.9 N. When completely submerged in water, its apparent weight is 12.1 N. What is the volume of the object?
Here's a hint that my professor provides:
When and object is completely submerged in a fluid, its apparent weight is
equal to its true weight minus the upward acting buoyant force: .
this equation for each fluid; once for the case that the object is submerged
in ethyl alcohol and once for the case that it is submerged in water. The
unknown volume V will appear in the expression for the buoyant
force FB. Combine the two equations and
solve for V.
Teach me how to solve it please!