Question

Here is a table of the force applied to a spring and the resulting extension, Δl.

Force (N)	Δl (m)
320	0.10
407	0.15
764	0.30
1121	0.45
1208	0.50

1. Plot a graph of force vs. extension, either on fine-ruled graph paper or by using a plotting program. What is the value of the spring constant? (If you do not plot as suggested, you may get wrong answers to this and the next question.)
2. What is the minimum tension required to start stretching the spring?

Answer 1

slope gives the spring constant which is 2277.6 N/m

minimum tension required to start stretching the spring is dependent on extension. tension depends on how far you want to stretch. you can stretch 1m or 0.1m or 0.01m. This is not specified in the question