Question

Which of the following is not true for a load-extension graph up to the limit of proportionality?

a) It is a straight line
b) It can cross the y-axis at any point
c) Extension ÷ load always equals the same value
d) If the load is doubled, then the extension is doubled

Answer 1

Step-by-step explanation:

Which of the following is not true for a load-extension graph up to the limit of proportionality?

a) It is a straight line (TRUE)

(See graph)

b) It can cross the y-axis at any point (FALSE)

c) Extension ÷ load always equals the same value (TRUE)

ΔL / P = 1/k (k - stiffness)

d) If the load is doubled, then the extension is doubled

P = k·ΔL

2·P = k·(2·ΔL)