A solid sphere of radius \( R \) made of a material of bulk modulus \( B \) is surrounded by a l...

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A solid sphere of radius \( R \) made of a material of bulk modulus \( B \) is surrounded by a liquid in a cylindrical container. A massless piston of area A floats on the surface of the liquid. When a mass \( M \) is placed on the piston to compress the liquid, find fractional change in the radius of the sphere.
[Ans. \( M g / 3 A B \) ]
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