| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.SL.TZ0.19 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 19 | Adapted from | N/A |
Question
A small sphere X of mass \(M\) is placed a distance \(d\) from a point mass. The gravitational force on sphere X is 90 N. Sphere X is removed and a second sphere Y of mass \(4M\) is placed a distance \(3d\) from the same point mass. The gravitational force on sphere Y is
A. 480 N.
B. 160 N.
C. 120 N.
D. 40 N.
Markscheme
D
Examiners report
[N/A]
