Question: A solid cylindrical needle of diameter d, length L, and density ? may float on a liquid surface as shown in Fig-1.. Neglect buoyancy and

A solid cylindrical needle of diameter d, length L, and density ? may “float” on a liquid surface as shown in Fig-1.. Neglect buoyancy and assume a contact angle of 0°. Calculate the maxi-mum diameter needle able to float on the surface.

A solid cylindrical needle of diameter d, length

Fig-1.

YL W YL d, L

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