A 6.76 kg disk makes 4.00 rev starting from rest. Calculate the radius of the disk if it hasa rotational kinetic energy of 9.89 J and an angular acceleration of 0.98 rad/s2(a) 0.345 m(b) 0.864 m(c) 0.216 m(d) 0.122 m

Write the expression for rotational kinetic energy.

Answered: A 6.76 kg disk makes 4.00 rev starting…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 74PQ

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A 6.76 kg disk makes 4.00 rev starting from rest. Calculate the radius of the disk if it has a rotational kinetic energy of 9.89 J and an angular acceleration of 0.98 rad/s2 (a) 0.345 m (b) 0.864 m (c) 0.216 m (d) 0.122 m