What are the moment of inertia, angular speed, and angular kinetic energy?

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To find the moment of inertia of the electron in circular motion, the formula I = m*r^2 is used, where m is the mass of the electron and r is the radius of the orbit. Angular speed can be derived from the angular momentum equation L = I*W, allowing for the calculation of W once I is known. The angular kinetic energy is calculated using the formula KE = 0.5*I*W^2. The discussion emphasizes the need to first determine the speed of the electron to proceed with these calculations. Understanding these relationships is crucial for solving the problem effectively.
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Homework Statement



an electron (mass 9.11*10^-31kg) moves in a circular orbit around nucleus of mass 1.67*10^-27kg. if the radius of orbit is 5*10^-11 meters and the angular momentum is 1.05*10^-34 kg*m^2/s

find moment of inertia
angular speed
angular kinetic energy

Homework Equations





The Attempt at a Solution



to find I, we need W (angular velocity). How do i find this if i just have 2 masses and radius?
 
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well can you find speed of electron?
 
gamer1319 said:
to find I, we need W (angular velocity). How do i find this if i just have 2 masses and radius?

What's the moment of inertia of a point mass at a distance r from the center of rotation?
 

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