Answer to Question #341205 in Mechanics | Relativity for Dejene

Mechanics | Relativity

Question #341205

A solid cylinder of mas 4kg and radius 40cm rotates about its axis with a frequency of 1/pi what is its rotational kinetic energy?

Expert's answer

"I=\\frac{mr^2}2,"

"\\omega=2\\pi\\nu=2,"

"E=\\frac{I\\omega^2}2=0.64~J."

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