- #1
leloup
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Homework Statement
Preliminary questions:
1. John's weight is 618 N. He is sitting on a bosun's chair which is suspended from a spring. John's feet are pressing vertically down on a bathroom scale which reads 45 kg. What force is John exerting on the bathroom scale?
Correct, computer gets: 441 N
2. What force is John applying to the spring?
Correct, computer gets: 177 N
The spring task:
Here is a table of the force applied to a spring and the resulting extension, Δl.
Force (N) Δl (m)
281 0.10
358 0.15
685 0.30
1012 0.45
1089 0.50
Plot a graph of Force vs. Δl.
What is the spring constant? If you don't plot a graph (or use a fitting program), you will get wrong answers. Plot the graph and see why.
Homework Equations
Not sure.
The Attempt at a Solution
I've plotted a graph, and came up with Δl = 0.4. Then I devided 177 N by 0.4, but the resulting answer wasn't correct.