Question

A close coiled helical spring whose free length when not
compressed is 15 cm, is required to absorb strain energy equal
to 50 Nm when fully compressed with the coils in contact. The
maximum shearing stress is limited to 140 MPa. Assuming a mean
coil diameter of 10 cm find the diameter of the steel wire required
and number of coils. C=80 GPa.
​

Answer 1

Answer:

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Answer 2

Answer:

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