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ramberson101
14.04.2020 •
Physics
A 105 kg horizontal platform is a uniform disk of radius 1.97 m and can rotate about the vertical axis through its center. A 60.9 kg person stands on the platform at a distance of 1.17 m from the center, and a 28.1 kg dog sits on the platform near the person 1.31 m from the center. Find the moment of inertia of this system, consisting of the platform and its population, with respect to the axis.
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Ответ:
The moment of inertia of the system is 335.23![Kg. m^{2}](/tpl/images/0598/3233/e57fa.png)
Explanation:
Given:
Mass of disk
kg
Radius of disk
m
Mass of person
kg
Distance between person and axis of rotation
m
Mass of dog
kg
Distance between dog and axis of rotation
m
For finding moment of inertia of this system,
Where
Perpendicular distance between axis of rotation and object,
Therefore, the moment of inertia of the system is 335.23![Kg. m^{2}](/tpl/images/0598/3233/e57fa.png)
Ответ:
A screw.
Explanation: