Recent content by jkd989

nevermind i solved it

I also know that the mass density of steel is 7860 kg/m^3, while the mass density of water is 1000 kg/m^3

ok archimedes' principle states that the magnitude of buoyant force=weight of displaced fluid. But How can i have any idea what the weight of the displaced fluid is?

My problem for the first one is that i can't find any formulas or theories in my textbook that explain the situation. I answered the second problem what i think is correctly so please ignore that part.

A bodybuilder is holding a 35-kg steel barbell above her head. How much force would she have to exert if the barbell were lifted underwater? In the hydraulic press used in a trash compactor, the radii of the input piston and the output plunger are 6.1 10-3 m and 4.5 10-2, respectively. If the...

A bodybuilder is holding a 35-kg steel barbell above her head. How much force would she have to exert if the barbell were lifted underwater? In the hydraulic press used in a trash compactor, the radii of the input piston and the output plunger are 6.1 10-3 m and 4.5 10-2, respectively. If...