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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A uniform stiff rod of length 300 mm
and having a weight of 300 N is
pivoted at one end and connected to
a spring at the other end. For
keeping the rod vertical in a stable
position the minimum value of
spring constant K needed is:
(a) 300 N/m (b) 400N/m
(c) 500N/m (d) 1000 N/m
[GATE-2004]
GATE-4. Ans. (c) Inclined it to a very low angle, d?
For equilibrium taking moment about ‘hinge’
W l d k (ld ) l 0 or k W 300 500N/m
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