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Tardigrade
Question
Physics
An iron needle slowly placed on the surface of water floats because
Q. An iron needle slowly placed on the surface of water floats because
2971
199
Mechanical Properties of Fluids
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A
It displaces water more than its weight
B
The density of material of needle is less than that of water
C
Of surface tension
D
Of its shape
Solution:
Needle floats due to surface tension of water which balances the weight of needle. In equilibrium
2
F
sin
θ
=
m
g