DP Physics (last assessment 2024)
Question 18M.2.HL.TZ2.d.iii
| Date | May 2018 | Marks available | [Maximum mark: 3] | Reference code | 18M.2.HL.TZ2.d.iii |
| Level | HL | Paper | 2 | Time zone | TZ2 |
| Command term | Draw | Question number | d.iii | Adapted from | N/A |
d.iii.
[Maximum mark: 3]
18M.2.HL.TZ2.d.iii
The ball is now displaced through a small distance x from the bottom of the bowl and is then released from rest.
The magnitude of the force on the ball towards the equilibrium position is given by
where R is the radius of the bowl.
The amplitude of oscillation is 0.12 m. On the axes, draw a graph to show the variation with time t of the velocity v of the ball during one period.
[3]
Markscheme
sine graph
correct amplitude «0.13 m s–1»
correct period and only 1 period shown
Accept ± sine for shape of the graph. Accept 5.7 s or 6.0 s for the correct period.
Amplitude should be correct to ± square for MP2
eg: v /m s–1 
[3 marks]