A grinding wheel has a radius of 100mm and rotates at 30 rev/s.What is the grinding speed at the circumference
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Step-by-step explanation:
circum.= 2 pi r
r= 100mm = 10cm
circum= 2×3.14×10
= 62.8 cm
1rev = 62.8 cm
so , speed = 30 1 rev / sec
= 30 × 62.8 / sec
= 1884cm/ sec
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