Need some help on these. I have looked through my book and now I just want confi

Question

Need some help on these. I have looked through my book and now I just want confirmation on what I think the answers are.

1. Question Details My Notes Ask Your Teacher 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 "slower" than linearly No, the graph of spring force versus spring displacement rises "faster" than linearly. Yes, the graph of spring force versus spring displacement is linear. 2. Question Detalls My Notes Ask Your Teacher A real spring is not massless, but the mass of your spring was not taken into account in experiment M19. How would the non-zero mass of your spring have affected your experimental values of the spring constant k and the oscillation period ? k was not affected but the measured T were larger than the values predicted by the equation relating period, measured mass, and spring constant. k was not affected but the measured T were smaller than the values predicted by the equation relating period, measured mass, and spring constant. k was larger than expected but the measured T were not affected. k was smaller than expected but the measured T were not affected 3. Question Details My Notes Ask Your Teacher Which of the following forces, in addition to the spring force and gravitational force, would have affected, even if only slightly, the measurement of the spring constant k? Select all that apply. the resistive drag force of the air the buoyant force of the air

Explanation / Answer

when the load applied to the spring is proportional to the amount of distance it travels we call it linear

for every 100 grams the extension is 1 cm

so force is proportional to displacement that means spring is linear

(2)

when we take the mass of spring into account we call it effective mass when we take it into account the T should increase, frequency should increase.

(3) I think drag force

drag is due to air resistance

buoyancy is due to downward gravity being balanced by pressure difference.

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