Janette Long's answer to Kc's Primary 6 Science Singapore question.

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Janette Long
Janette Long's answer
16 answers (Tutor Details)
1st
(4) is the answer.
The spring on TOP is taking 80g + second spring weight so it should stretch longer than when 50g was placed on it.
The spring below should stretch by somewhere between when no weight was placed and 50g weight was placed.