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# a circular disk of radius 100 cm rolls on a smooth horizontal surface with a velocity 36 km/hr how many revolution does it make per second?

Asked by jasleenn.kaur2908 23rd October 2018, 12:11 AM
Answered by Expert
Answer:
For an object rolling without slipping, linear translation velocity v and angular velocity of rotation ω are related as,
v = ω×R, where R is radius of the object.

v = 36 km/hr = 36 × (5/18) = 10 m/s

ω = 10×1 = 10 rad/s

1 revolution  = 2π rad /s

hence ω = 10/2π revoltions per second
Answered by Expert 23rd October 2018, 2:05 AM
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