Rigid rods of negligible mass lying along the y axis connect three particles. Th

Question

Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates about the x axis with an angular speed of 3.20 rad/s.

(a) Find the moment of inertia about the x axis.
kg m2

(b) Find the total rotational kinetic energy evaluated from

I?2.

J

(c) Find the tangential speed of each particle.

(d) Find the total kinetic energy evaluated from

.

J

(e) Compare the answers for kinetic energy in parts (b) and (d).

1 2 Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates about the x axis with an angular speed of 3.20 rad/s. sum.gif . J (e) Compare the answers for kinetic energy in parts (b) and (d). 10-p-026.gif (a) Find the moment of inertia about the x axis. kg ½ m2 (b) Find the total rotational kinetic energy evaluated from 1 2 I?2. J (c) Find the tangential speed of each particle. 4.00 kg particle m/s 2.00 kg particle m/s 3.00 kg particle m/s (d) Find the total kinetic energy evaluated from

Explanation / Answer

a) I = 4kg * (3m)

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