Question: .: An Aluminium - Copper Alloy (95% Al, 5% Cu) casting is made in a sand mold using a sand core that has a

.: An Aluminium - Copper Alloy (95% Al, 5% Cu) casting is made in a sand mold using a sand core that has a mass of 13 Kg. Determine the buoyancy force (in Newtons) exerted on the core to lift it during the metal pouring. Density of the sand is 0.0016 Kg/cm3 and Al-Cu alloy is 0.003 Kg/cm.

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