College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:A neutron star of mass \(2.10 \times 10^{30}\) kg and radius 8.40 km rotates with a period of 0.0194 seconds. What is its rotational kinetic energy?
Transcribed Image Text:**Transcription and Explanation for Educational Website**
### System of Particles and Rotational Motion
**Problem Statement:**
A system of point particles is depicted in the figure. Each particle has a mass of 0.280 kg, and they all lie in the same plane. The task is to determine the moment of inertia of the system about the given axis.
**Figure Explanation:**
- The diagram consists of three point particles connected to a central axis marked in red.
- The distances from the axis to each particle are as follows:
- The first particle is located 38 cm above the axis.
- The second particle is positioned 25 cm to the right of the axis.
- The third particle is 58 cm to the left and downward from the axis.
**Question:**
- What is the moment of inertia of the system about the given axis?
**Additional Question:**
- If the system rotates at 4.80 revolutions per second (rev/s), what is its rotational kinetic energy?
---
To solve these problems, apply the formula for the moment of inertia for point masses and the formula for rotational kinetic energy.
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