Vertical Spring (gravity) — Practice Quiz

Question 1

A 0.2 kg mass stretches a spring by 5 cm. Period of vertical oscillation:

Accepted Answer

0.45 s

Answer

0.45 ms

Answer

0.045 s

Answer

4.5 s

Question 2

Does gravity change the period of a vertical spring-mass system?

Accepted Answer

No, T is unchanged (gravity just shifts equilibrium)

Answer

Yes, T increases

Answer

Yes, T decreases

Answer

Yes, T doubles

Question 3

Static extension δ of a vertical spring with mass m and constant k is:

Accepted Answer

mg/k

Answer

k/(mg)

Answer

mg·k

Answer

mg/k²

Question 4

Vertical spring with δ = 0.04 m. Frequency of small oscillations (g = 10):

Accepted Answer

~ 2.5 Hz

Answer

~ 1.25 Hz

Answer

~ 5 Hz

Answer

~ 0.5 Hz

Question 5

In a vertical spring at the new equilibrium, the spring force is:

Accepted Answer

Equal and opposite to weight

Answer

Zero

Answer

Equal to weight

Answer

Maximum