Question

two springs have spring constants of 10.0 N/cm and 15.0 N/cm. which spring is more difficult to stretch?

Answer 1

F = k x
how hard to pull 1 unit (x = 1 cm) for each?
F1 = 10 Newtons
F2 = 15 Newtons

Answer 2

so 15.0 is harder to stretch

Answer 3

Yes.

Answer 4

The spring constant of two springs is 3 N/cm and 5 N/cm respectively.