A spring system is set up as follows: a platform with a weight of 10 \mathrm{~N} is on top of two springs, each with spring constant 75 \mathrm{~N} / \mathrm{m}. On top of the platform is a third spring with spring constant 75 \mathrm{~N} / \mathrm{m}. If a ball with a weight of 5.0 \mathrm{~N} is then fastened to the top of the third spring and then slowly lowered, by how much does the height of the spring system change?
Answer Choices
A. 0.033 \mathrm{~m}
B. 0.067 \mathrm{~m}
C. 0.100 \mathrm{~m}
D. 0.133 \mathrm{~m}
E. 0.600 \mathrm{~m}
