A solid cylindrical needle of diameter d , length L , and densityρ n may fl oat in liquid of surface tension Y . Neglectbuoyancy and assume a contact angle of 0 ° . Derive a formulafor the maximum diameter d max able to fl oat in theliquid. Calculate d max for a steel needle (SG = 7.84) inwater at 20 ° C.
A solid cylindrical needle of diameter d , length L , and densityρ n may fl oat in liquid of surface tension Y . Neglectbuoyancy and assume a contact angle of 0 ° . Derive a formulafor the maximum diameter d max able to fl oat in theliquid. Calculate d max for a steel needle (SG = 7.84) inwater at 20 ° C.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A solid cylindrical needle of diameter d , length L , and density
ρ n may fl oat in liquid of surface tension Y . Neglect
buoyancy and assume a contact angle of 0 ° . Derive a formula
for the maximum diameter d max able to fl oat in the
liquid. Calculate d max for a steel needle (SG = 7.84) in
water at 20 ° C.
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