Author Question: The gravitational potential energy of a system 1.depends on the reference configuration for zero ... (Read 13 times)

newyorker26 · **on:** Jul 28, 2018

The gravitational potential energy of a system
1.depends on the reference configuration for zero potential energy.
2.is always positive.
3.is always negative.
4.is none of these.

Question 2

A certain uniform spring has a constant k. Now the spring is cut in half. What is the relationship between k and the spring constant k of each resulting smaller spring?
1. Each k = k/2
2. Each k = 2k
3. Each k = k/4
4. Each k = 4k