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Saturday, February 24 2018 @ 07:52 PM CST
 Forum Index >  Test Paper Related >  Primary 6 Matters
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By: 2000123 (offline)  Thursday, April 26 2012 @ 06:15 AM CDT (Read 598 times)  

Tom performed a magic trick using the set-up below.

When he lifted the paper clip,it seemed to float in air while the string remained upright.He then passed a piece of paper in between the paper clip and the top of the box but the paper clip remained upright.

a) Describe what he had done to the cardboard.

b) Explain how her magic tricks works.

c) State two forces that were acting on the paper clip.

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