


1. Diagram above shows the apparatus used by 5M pupils in an investigation. All the cylinders are placed on the cardboard.The cardboard lift up slowly. The time taken for each cylinder to fall down are recorded.
(a) What is the aim of the investigation above?
(b) In this investigation, state the following below:
i) What is changed :
ii) What is onserved :
(c) Give a reason (Inference) to explain your observation in this investigation.
(d) State the relationship between size of the base area and the stability of the structure.
(e) In this investigation, state two variables that should be kept the same.
(f) State another factor can effect onto the stability of structure.
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