A gramophone record consists of a uniform circular disk of radius R and total mass M...
A gramophone record consists of a uniform circular disk of radius R and total mass M with a hole punched through it's center with a radius r.
a) Show that the moment of inertia of the record about the perpendicular axis passing through it's center is 1/2 M(R^2 + r^2).
b)A gramophone record having a mass of m=100g, radius =15cm and hole of radius 3cm is rotating freely on a turntable at 33 revolutions per minute with no friction. A point mass of 10g is dropped onto the record at a distance of 10cm from it's center and sticks to the point of impact. Calculate the new speed of rotation of the record
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A gramophone record consists of a uniform circular disk of
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A turntable has a radius R and mass M (considered as a disk) and is rotating...
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A uniform solid disk of mass m = 3.08 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 6.09 rad/s. (a) Calculate the magnitude of the angular momentum of the disk when the axis of rotation passes through its center of mass. kg · m2/s (b) What is the magnitude of the angular momentum when the axis of rotation passes through a point midway between the center and the rim?...
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specify equations used please Part I: A disk of mass M and radius R is rotating...
specify equations used please
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A disk with uniform density and radius 0.596 m used to weigh 24.48 kg, but then a hole was punched out. The black arrow in the image above shows the axis of rotation. The hole has radius 0.0951 m, and has its center 0.164 m away from the center of the disk. What is the moment of inertia of the disk with a hole? (Hint: only a scientist could call a hole negative mass! Find the mass taken away based...
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specify equations used please
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