Question Constellation Sign up for free AQA · GCSE · Physics · Higher
Safe setup for a spring practical
A student investigated a spring with a different spring constant.
When masses are placed on the spring it compresses.
The student measured the compression of the spring for different masses.
Figure 3 shows some of the equipment used.
Explain why the investigation should be done on the laboratory floor rather than on a table.
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Marking points
- 1 Identifies that a mass could fall off the spring.
- 2 Explains that the lower fall height reduces the risk of injury or damage.
Full-mark answer
A large mass could fall off the spring. On the floor it would fall through a smaller height than from a table, so it is less likely to cause injury or damage.
Why this answer loses marks
It is safer on the floor.
The hazard and the way the risk is reduced must be stated: a mass could fall, and the smaller fall height reduces injury or damage.