Calculate the rotational inertia of a wheel that has akinetic energy of 28.0 kJ when rotating at 879rev/min.Number iUnits<>

Given values:Rotational kinetic energy:K = 28 kJ = 28000 J Angular velocity:ω = 879 rev/min…

Answered: Calculate the rotational inertia of a…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 23PE: (a) Calculate the rotational kinetic energy of Earth on its axis. (b) What is the rotational kinetic...

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A bug of mass 0.020 kg is at rest on the edge of a solid cylindrical disk (M=0.10kg,R=0.10m) rotating in a horizontal plane around the vertical axis through its center. The disk is rotating at 10.0 rad/s. The bug crawls to the center of the disk. (a) What is the new angular velocity of the disk? (b) What is the change in the kinetic energy of the system? (c) If the bug crawls back to the outer edge of the disk, what is the angular velocity of the disk then? (d) What is the new kinetic energy of the system? (e) What is the cause of the increase and decrease of kinetic energy?
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Consider two objects with m1 m2 connected by a light string that passes over a pulley having a moment of inertia of I about its axis of rotation as shown in Figure P10.44. The string does not slip on the pulley or stretch. The pulley turns without friction. The two objects are released from rest separated by a vertical distance 2h. (a) Use the principle of conservation of energy to find the translational speeds of the objects as they pass each other. (b) Find the angular speed of the pulley at this time.
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(a) Calculate the rotational kinetic energy of Earth on its axis. (b) What is the rotational kinetic energy of Earth in its orbit around the Sun?
Refer to the question below.
The answer is supposed to be v=2.56m/s but I'm not sure how to write out the problem.
A wheel with rotational inertia 46 kg.m2 is mounted on a fixed, frictionless axle. The angular speed of the wheel is increased from zero to 43 rad/s in 19-s. What is the AVERAGE power input to the wheel during this time interval?
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Calculate the rotational inertia of a wheel that has a kinetic energy of 28.0 kJ when rotating at 879 rev/min. Number i Units <>