Maths-
General
Easy
Question
Assuming that stiffness of a beam of rectangular cross – section varies as the breadth and as the cube of the depth, for the stiffest beam which can be cut out of a circular beam of radius ‘r’, breadth must be equal to
- one third of the diameter of the log
- one fourth of the diameter of the log
- half of the diameter of the log
- None
The correct answer is: half of the diameter of the log
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