The gravitational potential energy of a system 1.depends on the ...

[newyorker26]

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

[firehawk60]

Answer to Question 1

1

Answer to Question 2

2

[newyorker26]

Thanks for the timely response, appreciate it

[Joy Chen]

Gracias!