A metallic wire of density ρ floats horizontally in the water. The maximum radius of the wire so that the wire may not sink will be (surface tension of water = T and angle of contact θ = 0 ° )

Question

A metallic wire of density ρ floats horizontally in the water. The maximum radius of the wire so that the wire may not sink will be (surface tension of water = T and angle of contact θ = 0 ° ), 2 T π ρ g, 4 T π ρ g, T π ρ g, T ρ π g

MARKS App · Accepted Answer

2 T l cos θ = m g 2 T l cos θ = π r 2 l ρ g For maximum radius, cos θ = 1 ∴ r = 2 T π ρ g

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