Finding the Spring Constant: A Simple Calculation

Thread starter rola99
Start date Feb 14, 2011
Tags

Constant Spring Spring constant

AI Thread Summary

To find the spring constant, the formula k = (w2 - w1) / (x2 - x1) is applied, where w represents weight and x represents height. The calculated spring constant is 4.55 lb/in, but the textbook states the correct answer is 36.4 lb/in. The discrepancy suggests a possible error in the interpretation of the heights or weights used in the calculation. Clarification on the values for free height and compressed height is necessary to resolve the issue. Accurate application of the formula is crucial for determining the correct spring constant.

Feb 14, 2011

rola99

Homework Statement

A spring having a free height of 4.25 inches is only 3.15 inches high when it supports a load of five pounds. What is the spring constant?

Homework Equations

k = (w2-w1)/(x2-x1)

The Attempt at a Solution

K = (5-0)/(4.25-3.15) = 4.55 lb/in

the book gives the right answer as 36.4lb/in

did I do anything wrong?

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Feb 14, 2011

Doc Al

Mentor

Your answer looks right to me.

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