A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is______________? | MCQ Hive

Civil Engineering MCQs

Q A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is______________?

A A. 4wd²n/d4n
B B. 4w²dn/d4n
C C. 4w²d3n/d4n
D D. 4w²d3n²/d4n

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