Physics, 19.11.2019 05:31, mikaylaaaaa
Aperson with mass mp = 75 kg stands on a spinning platform disk with a radius of r = 1.59 m and mass md = 186 kg. the disk is initially spinning at ï‰ = 2 rad/s. the person then walks 2/3 of the way toward the center of the disk (ending 0.53 m from the center). 1.what is the total moment of inertia of the system about the center of the disk when the person stands on the rim of the disk? 2.what is the total moment of inertia of the system about the center of the disk when the person stands at the final location 2/3 of the way toward the center of the disk? 3.what is the final angular velocity of the disk? 4.what is the change in the total kinetic energy of the person and disk? (a positive value means the energy increased.) 5.what is the centripetal acceleration of the person when she is at r/3? 6.if the person now walks back to the rim of the disk, what is the final angular speed of the disk?
Answers: 2
Physics, 22.06.2019 10:10, sadie960
Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.
Answers: 1
Physics, 22.06.2019 22:00, asherkbohannan
Which statement best explains why the overall charge on an atom is zero?
Answers: 1
Aperson with mass mp = 75 kg stands on a spinning platform disk with a radius of r = 1.59 m and mass...
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