Answers

2014-10-06T20:52:31+05:30
Motion of a sewing machine is non uniform
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2014-10-06T20:54:29+05:30
Its a vibratory  motion, nothing else
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thanks but i know it what i asked is is it uniform or non uniform
umm.. sorry I misunderstood ur question
it is not uniform. its speed increases, decreases becomes zero etc. it is a simple harmonic motion.