A spring with an attached pan is hanging vertically and a spring displacement sc

Question

A spring with an attached pan is hanging vertically and a spring displacement scale indicates how much the spring has stretched. When a total mass of 100 g is on the pan, the spring stretches 2 cm from its "no mass on the pan" length.  When a total mass of 200 g is on the pan, the spring stretches 3 cm from its "no mass on the pan" length. When a total mass of 400 g is on the pan, the spring stretches 4 cm from its "no mass on the pan" length. Is the spring ideal?

No, the graph of spring force versus spring displacement rises "faster" than linearly.

No, the graph of spring force versus spring displacement rises "slower" than linearly.      

Yes, the graph of spring force versus spring displacement is linear.

Explanation / Answer

Yes, the graph of spring force versus spring displacement is linear.

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