+1 vote
in Machine Dynamics by (34.3k points)
A cantilever shaft has a diameter of 6 cm and the length is 40cm, it has a disc of mass 125 kg at its free end. The Young’s modulus for the shaft material is 250 GN/m². Calculate the static deflection in nm.

(a) 0.001

(b) 0.083

(c) 1.022

(d) 0.065

This question was posed to me by my college professor while I was bunking the class.

This intriguing question comes from Natural Frequency of Free Longitudinal Vibrations topic in chapter Longitudinal and Transverse Vibrations of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Right choice is (a) 0.001

The explanation: Area = πd^2/4 = 0.00282 m^2

s = W.l/A.E

= 0.001 nm.

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