A uniform 800 gram disk rotates at 1.2 rpm about an axis perpendicular to the disk at its center. From above sand is carefully dropped straight down onto the disk, so that it forms a thin uniform ring of sand on the disk at a distance of 0.40 m from the axis of rotation. The total mass of the sand in the ring on the disk is 0.50 kg. (a) What is the moment of inertia of the disk? (b) What is the moment of inertia of the ring of sand? (c) After all of the sand is in place on the disk, what is the angular speed of the disk and sand? Include a diagram of the
A uniform 800 gram disk rotates at 1.2 rpm about an axis perpendicular to the disk at its center. From above sand is carefully dropped straight down onto the disk, so that it forms a thin uniform ring of sand on the disk at a distance of 0.40 m from the axis of rotation. The total mass of the sand in the ring on the disk is 0.50 kg. (a) What is the moment of inertia of the disk? (b) What is the moment of inertia of the ring of sand? (c) After all of the sand is in place on the disk, what is the angular speed of the disk and sand? Include a diagram of the
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Transcribed Image Text:A uniform 800 gram disk rotates at 1.2 rpm about an axis perpendicular to the disk at its
center. From above sand is carefully dropped straight down onto the disk, so that it forms a
thin uniform ring of sand on the disk at a distance of 0.40 m from the axis of rotation. The
total mass of the sand in the ring on the disk is 0.50 kg. (a) What is the moment of inertia of
the disk? (b) What is the moment of inertia of the ring of sand? (c) After all of the sand is in
place on the disk, what is the angular speed of the disk and sand? Include a diagram of the
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