A solid disk, spinning counter-clockwise, has a mass of $7 kg$ and a radius of $8 m$ . If a point on the edge of the disk is moving at $2 m/s$ in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?

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Answer 1 · 2017-03-05T18:27:09

$omega = 0.25rads^-1$

$p = 1.75kgm^2s^-1$

Angular velocity is given by

$omega = v/r = 2/8 = 0.25$

$p = momega = 7 xx 0.25 = 1.75$

A solid disk, spinning counter-clockwise, has a mass of 7 kg7 kg and a radius of 8 m8 m. If a point on the edge of the disk is moving at 2 m/s2 m/s in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?