practice

1. Write something.
2. Write something else.
3. Write something different.
4. Write something completely different.

numerical

1. A spring with natural length 0.057 m is compressed by a 0.30 kg mass to a length of 0.051 m.
   1. Find the spring constant.
   2. Find the length of the spring if the 0.30 kg mass were replaced by a 0.40 kg mass.