See attachment #1 for diagram.
Find he density of an irregularly shaped plastic object found floating in the sea. Its mass is Mp= 1.25 kg. It is tied by a cord to a block of aluminum, mass Ma= 1.5 kg, whose density is Da= 2700 kg/m^3. The two masses are submerged in sea water, density Dliq=1025 kg/m^3, and held stationary by a cord exerting upward force C= 6.57 nt.
Find the density of the plastic object.
See attachment #2.
Step 1. Show all vertical forces acting on both masses.
Step 2. ...
Complete with diagram, the solution presents a detailed response to the problem.