Question by Vandana S: How do you find F and the k constant in the spring formula?
I need to test a spring. I know that F=kx, but in my case both F and k are unknown. If I hang a 100g, 200g, or 500g mass on the bottom of a spring how can I calculate the force acting on the spring and find k?
Best answer:
Answer by guy
x is the displacement, you can measure this for no mass (natural spring length=x0) and after hanging 100, 200, and 500 gram.
calculate x using distance-x0 (meters)
convert mass to force using
F = mg
After this graph F versus x. Hopefull this will be a line going through 0. gradient = delta_F/delta_x which is what you want
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Tags: constant, find, Formula, Spring