| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.SL.TZ2.7 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 7 | Adapted from | N/A |
Question
A block is attached to a stretched spring and then released. It moves from X to Y along a horizontal frictionless surface in the direction shown. The mass of the spring is negligible.
The equilibrium position of the system is P.
Which of the following is correct with respect to the changes in kinetic energy and potential energy of the block and of the spring as the block moves from X to Y?
Markscheme
B
Examiners report
The mass of the spring is negligible; hence it cannot have any kinetic energy, thus automatically eliminating C and D.
Syllabus sections
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