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(1) A spring is subjected to a load of 20 kips and deflects 1.6". What is...

(1) A spring is subjected to a load of 20 kips and deflects 1.6". What is the spring's stiffness?

(2) A 20' long steel column (E = 29,000 ksi) is subjected to a load of 3000 kips. What is its minimum area is it cannot deflect more than 1/8"?

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Answer #1

solution 1:

spring stiffness= load /deflection

=20 kips/1.6"=20000lbs/1.6 inch

spring stiffness= 12,500 lbs per inch.

solution 2.

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