Question 1

How is spring force calculated?

Accepted Answer

Spring force follows Hooke's Law: F = -kx, where k is spring constant (N/m) and x is displacement from equilibrium.

Question 2

What is spring constant?

Accepted Answer

Spring constant (k) measures stiffness in N/m. Higher k means stiffer spring requiring more force for same stretch.

Question 3

What's the difference between force and pressure?

Accepted Answer

Force (newtons) is a push or pull. Pressure (pascals) is force per unit area. Same force over smaller area = higher pressure.

Question 4

Why do we need different force units?

Accepted Answer

Newtons are SI standard. Pounds-force connects to everyday weight. Dynes (CGS) are used in some scientific fields. Each suits different applications.

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