3. An extremely light rod 1.00 m long has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. The system rotates at

Question

3. An extremely light rod 1.00 m long has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. The system rotates at a constant angular speed about a fixed axis perpendicular to the rod that passes through the rod 30.0 cm from the end with the 3.00-kg mass attached. The kinetic energy of the system is measured to be 100.0 J. (a) What is the moment of inertia of this system about the fixed axis

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Thạch Thảo 1 year 2021-08-23T12:07:08+00:00 1 Answers 67 views 0

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  1. kimcuc
    0
    2021-08-23T12:08:36+00:00
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    Answer:

      1.25 kg·m²

    Explanation:

    Multiply each mass by the square of its distance from the center of rotation. The moment of inertia of the system is the sum of those products.

    (a) I = Σ(mr²) = (3.0 kg)(0.30 m)² +(2.0 kg)(0.70 m)² = 1.25 kg·m²

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