0 votes
73 views
asked in SOM&MD by (215k points)

A circular disc 50 cm outside diameter has a central hole and rotates at a uniform speed about an axis through its centre. The diameter of the hole is such that the maximum stress due to rotation is 85% of that in thin ring whose mean diameter is also 50 cm. If both are of the same speed, determine the diameter of the central hole and speed of the disc for the data given below.             

Allowable stress = 900 kg/cm2

Specific weight = 7.8 gm/cm2

Poisson’s ratio = 0.3

Please log in or register to answer this question.

Welcome to Q&A discussion forum, where you can ask questions and receive answers from other members of the community.

10.4k questions

274 answers

26 comments

15.2k users

...