metal ball has a single cavity inside it. The ball weighs 264 g in air and 221 g
when completely immersed in water. Density of the metal is 8.8 gm/cc. The volume of
the cavity inside the ball is · · ·. Express your answer in cc.
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Given: A piece of copper having an internal cavity weighs 264 g in air and 221 g in water. the density of copper is 8.8 g cm-3 what is the volume of the cavity ?
As
loss in the weight of the piece in the water will refer to the buoyancy acting in the upward direction, FB = V ρ g = 43 g
=> V = 4.39 cm3
Volume of copper piece = 264/8.8 = 30 cm3
Hence,
Volume of the cavity = (30-4.39) cm3 = 25.61 cm3
As
loss in the weight of the piece in the water will refer to the buoyancy acting in the upward direction, FB = V ρ g = 43 g
=> V = 4.39 cm3
Volume of copper piece = 264/8.8 = 30 cm3
Hence,
Volume of the cavity = (30-4.39) cm3 = 25.61 cm3
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