Hooke\'s law describes a certain light spring of unstretched length 33.9 cm. Whe

Question

Hooke's law describes a certain light spring of unstretched length 33.9 cm. When one end is attached to the top of a doorframe and a 7.31 kg object is hung from the other end, the length of the spring is 43.6 cm.

(a) Find its spring constant.

Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. kN/m

(b) The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 175 N. Find the length of the spring in this

Explanation / Answer

1) spring cosntant = 7.31*9.8/(.436 - .339) = 0.7385 KN/m

2) 738.5*x = 175

x = 0.236 m

hence the final lenght = .236 + .339 = .575 m = 57.5 cm

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