## College Physics (4th Edition)

The correct answer is: D. $6.5~N/m$
We can find the spring constant: $kx = mg$ $k = \frac{mg}{x}$ $k = \frac{(0.10~kg)(9.80~m/s^2)}{0.15~m}$ $k = 6.5~N/m$ The correct answer is: D. $6.5~N/m$