A hoop rotates about an axis through its center with an angular velocity of 40.0 rad/s.If the rotational kinetic energy of the hoop is 400 J,its angular momentum is A)800 kg · m²/s B)400 kg · m²/s C)200 kg · m²/s D)20 kg · m²/s E)5 kg · m²/s

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The Answer of A hoop rotates about an axis through its center with an angular velocity of 40.0 rad/s.If the rotational kinetic energy of the hoop is 400 J,its angular momentum is A)800 kg · m²/s B)400 kg · m²/s C)200 kg · m²/s D)20 kg · m²/s E)5 kg · m²/s

A Hoop Rotates About an Axis Through Its Center with an Angular