Hooke's Law

Question 1

Hooke’s Law Equation

Answer 1

Force=spring constant*distance (F=kx)

N = N/cm * cm

Question 2

Elastic materials

Answer 2

Go back to their original shape once the stretching force is removed. Plastic materials do not. Obey’s Hooke’s Law if the extension is directly proportional to the stretching force below the elastic limit.

Question 3

Finding spring constant

Answer 3

F = kx

Or the gradient of an F-x graph

Question 4

Graphs

Answer 4

Steep line = Stiff, brittle metal.
Normal with curve at end = elastic.
Curve = Plastic material