plz do both parts urgent
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the safety in this investigation is to breaking thread Brock e
mansi20062017:
do another too
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(a) Bcoz once the thread breaks the force metre received backward push which may hurt Sam. Also that when you pull a thread, which is pretty thin, acts high force on ur hand and may cause cuts.
(b) The weight of different threads differ but it is not possible to measure such a small amount of force. Another reason is that I think the 'force metre' they used is actually a 'spring balance'(not sure about the 2nd reason).
HOPE IT HELPS YOU..
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