Mechanics: 3, 5

Question 1

What is Hooke’s law? (2)

Answer 1

Tension is proportional to extension in a stretched spring or string
T = kx

Question 2

What does the constant of elasticity depend on? (3)

Answer 2

Unstretched length of the spring or string, l
Modulus of elasticity, λ
So T = λx / l