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Q.6. A platinum wire ring of radius 2.5 cm floats horizontally on the surface of water.A vertical force of 0.022 N is required to detach the ring from the surface ofwater. Find surface tension of water.​

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\huge\underline{\underline{\bf \orange{Question-}}}

A platinum wire RING of radius 2.5 cm floats horizontally on the SURFACE of water. A vertical FORCE of 0.022 N is required to detach the ring from the surface of water. FIND surface tension of water.

\huge\underline{\underline{\bf \orange{Solution-}}}

\large\underline{\underline{\sf Given:}}

  • Radius (R) = 2.5cm ➝ 0.025m
  • Force (F) = 0.022N

\large\underline{\underline{\sf To\:Find:}}

  • Surface Tension of water (S)

\large{\rm We \: Know \: That-}

\large{\boxed{\bf \blue{S=\dfrac{F}{2πR}}}}

\implies{\sf \dfrac{0.022}{2×3.14×0.025} }

\implies{\sf \dfrac{0.022}{0.157} }

\implies{\bf\red{Surface\: Tension ( S)=0.14 N/m}}

\huge\underline{\underline{\bf \orange{Answer-}}}

Surface Tension of water is {\bf \red{0.14\:N/m}}.



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