Just need some explaination, thank you.

Whats meaning of the spring constant k in Hooke's law.

Whats the relationships between Hooke's law, work, and elastic potential energy in a system of objects.

Consider two different masses oscillating on springs with the same spring constant. Describe how the simple harmonic motion of the masses will differ.

Explain the relationship between SHM, Hooke's Law, and uniform circular motion.