Motion of needle in sewing machine running at a constant speed
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displacement is 0 .
velocity is~ .
ur questions is not understood ...sorry
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Answer:
Yes it run at a constant speed
Step-by-step explanation:
Because speed =distance /time distance covered by needle is =to
time taken
It is same as pendulum of a clock it return to its mean position after covering a distance at particular period of time
I hope this will help you
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