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A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Calculate the average angular velocity during braking period.

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in Machine Design by (86.7k points)
A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Calculate the average angular velocity during braking period.

(a) 15.45rad/s

(b) 17.32rad/s

(c) 18.32rad/s

(d) None of the mentioned

This question challenged me during a practical exam.

I am reviewing the Brakes unit in Friction Clutches, Brakes, Belt Drives and Chain Drives of Machine Design

1 Answer

0 votes
ago by (48.2k points)
Most accurate answer is (c) 18.32rad/s

Unravel the mysteries with: ω(avg)=[ω()initial+ω(final)]/2.

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