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A mechanical door opener is used to deliver a constant 65 W of power to a spring with k = 759 N/m for 3.5 s. If the spring was originally uncompressed, what is the compression of the spring (in centimeters) at the end of that time period?

2007-11-14 10:22:37 · 1 answers · asked by Anonymous in Science & Mathematics Physics

1 answers

The work done is the product of power and time. This increases the potential energy of the spring, which is expessed as 1/2 k x^2. Set the two equal and solve for x.

Wt = 1/2 k x^2

2007-11-14 10:28:19 · answer #1 · answered by jgoulden 7 · 0 0

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