54. Ten identical metallic balls of density 5 g cm-when
dropped into water, the volume of the water dis-
placed is found to be 500 cm3. Determine the mass
of each metallic ball.
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Explanation:
Given : Volume of the packet V=350 cm
3
Mass of the packet M=500 g
∴ Density of the packet ρ=
V
M
=
350
500
=1.43 g cm
−3
As the density of packet is greater than that of water, thus it will sink in water.
Mass of water displaced by the packet is equal to the volume of packet times the density of water
∴ m
w
=ρ
w
×V
m
w
=1×350=350 g
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