1. The problem statement, all variables and given/known data Compare the simple harmonic motion of two identical masses oscillating up and down on springs with different spring constants. 2. Relevant equations F = -kx 3. The attempt at a solution Okay, so I understand that the higher the spring constant, the harder it is to compress the spring. But I don't know how to relate that to the graph of harmonic motion. If the spring constant is higher , does that mean that the amplitude is lower? Or that the frequency is shorter?