A disk with mass m = 8.6 kg and radius R = 0.35 m begins at...
A disk with mass m = 8.6 kg and radius R = 0.35 m begins at rest and accelerates uniformly for t = 18.9 s, to a final angular speed of ω = 29 rad/s. (answer all parts of this question please, thank you so so much)
1) What is the angular acceleration of the disk?
2) What is the angular displacement over the 18.9 s?
3) What is the moment of inertia of the disk?
4) What is the change in rotational energy of the disk?
5) What is the tangential component of the acceleration of a point on the rim of the disk when the disk has accelerated to half its final angular speed?
6) What is the magnitude of the radial component of the acceleration of a point on the rim of the disk when the disk has accelerated to half its final angular speed?
7) What is the final speed of a point on the disk half-way between the center of the disk and the rim?
8) What is the total distance a point on the rim of the disk travels during the 18.9 seconds?
Homework Answers
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please help
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please help
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A person with mass mp = 76 kg stands on a spinning platform disk
with a radius of R = 1.89 m and mass md = 191 kg. The disk is
initially spinning at ω = 1.6 rad/s. The person then walks 2/3 of
the way toward the center of the disk (ending 0.63 m from the
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What is the total moment of inertia of the system about the
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A 0.6 m diameter solid disk with mass 4.2 kg is rotating with a constant angular velocity of 8t rad/sec. A) What is the tangential speed of a point 15. on the rim? B) Calculate the rotational kinetic energy of the wheel. rolling along a Find the total kinetic energy of the wheel in the previous problem if the wheel is now horizontal surface at 16 m/s. 16.
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