DP Physics (last assessment 2024)
Question 18M.3.SL.TZ2.b.i
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.3.SL.TZ2.b.i |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Describe | Question number | b.i | Adapted from | N/A |
b.i.
[Maximum mark: 2]
18M.3.SL.TZ2.b.i
A wheel of mass 0.25 kg consists of a cylinder mounted on a central shaft. The shaft has a radius of 1.2 cm and the cylinder has a radius of 4.0 cm. The shaft rests on two rails with the cylinder able to spin freely between the rails.
The wheel leaves the rails at point B and travels along the flat track to point C. For a short time the wheel slips and a frictional force F exists on the edge of the wheel as shown.
Describe the effect of F on the linear speed of the wheel.
[2]
Markscheme
force in direction of motion
so linear speed increases
[2 marks]
