Mass moment of inertia by trifilar suspension system - Theory of Machines - 1

Q.  Trifilar suspension system is used to determine mass moment of inertia of
- Published on 06 Aug 15

a. disc
b. flywheel
c. both a. and b.
d. none of the above

ANSWER: both a. and b.


  • Sravanthi   -Posted on 19 Oct 15
    Trifilar suspension system

    Trifilar suspension system or torsion pendulum is used to determine mass moment of inertia of disc or flywheel.

    This disc or flywheel is suspended by three strings. If they are rotated by an angle θ through centre of gravity and released, they oscillate with simple harmonic motion.

    Frequency of oscillation = [ (x / 2 k π) √g / l ] cycles / sec

    Periodic time of oscillation = 1 / fn

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