Pushing on the pump of a soap dispenser compresses a small spring. When the spri

Question

Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.45cm , its potential energy is 0.0030 J . What is the force constant of the spring? Express your answer using two significant figures. What compression is required for the spring potential energy to equal 0.0074 J ? Express your answer using two significant figures.

Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.45cm , its potential energy is 0.0030 J . Part A What is the force constant of the spring? Express your answer using two significant figures. Part B What compression is required for the spring potential energy to equal 0.0074J ? Express your answer using two significant figures. Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.45cm , its potential energy is 0.0030 J . What is the force constant of the spring? Express your answer using two significant figures. What compression is required for the spring potential energy to equal 0.0074 J ? Express your answer using two significant figures.

Explanation / Answer

A. E = kx2 /2

0.0030 = k(0.45/100)2 /2

k = 296.30 N/m

B. 0.0074 = 296.30x2 /2

x = 0.007067 m

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