1. A system of three point particles of equal masses 45 gm are initially connected by three rods of negligible mass to an axis of rotation perpendicular to the plane of the particles as shown in the figure-1. 40 cm axis 20 cm 60 cm Figure 1 (a) What is the moment of inertia of the system of three particles? (b) If the massless rods are replaced by three rods of equal masses of 65 gm keeping their lengths unchanged, what is the moment of inertia of the system now? (c) If the systems rotate at 4.75 rev/s, what are the systems rotational kinetic energies?
1. A system of three point particles of equal masses 45 gm are initially connected by three rods of negligible mass to an axis of rotation perpendicular to the plane of the particles as shown in the figure-1. 40 cm axis 20 cm 60 cm Figure 1 (a) What is the moment of inertia of the system of three particles? (b) If the massless rods are replaced by three rods of equal masses of 65 gm keeping their lengths unchanged, what is the moment of inertia of the system now? (c) If the systems rotate at 4.75 rev/s, what are the systems rotational kinetic energies?
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Chapter1: Units, Trigonometry. And Vectors
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Transcribed Image Text:1. A system of three point particles of equal masses 45 gm are initially connected by
three rods of negligible mass to an axis of rotation perpendicular to the plane of
the particles as shown in the figure-1.
40 cm
axis
20 cm
60 cm
Figure 1
(a) What is the moment of inertia of the system of three particles?
(b) If the massless rods are replaced by three rods of equal masses of 65 gm keeping
their lengths unchanged, what is the moment of inertia of the system now?
(c) If the systems rotate at 4.75 rev/s, what are the systems rotational kinetic
energies?
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