Two wheels of moment of inertia 9.8 kg.nf and 7.8 kg.nf are set in rotation with angular speed 2.9 rad/s and 8.5 rad/s, respectively. When they are coupled face to face (as shown in the following figure) they rotate with a common angular speed co due to frictional forces, then what is the change in kinetic energy (0) of the wheels due to frictional forces? Before coupling After coupling Select one: a. -68.10 b.136.20 C 68.10 O d.-136.20

Two wheels of moment of inertia 9.8 kg.nf and 7.8 kg.nf are set in rotation with angular speed 2.9 rad/s and 8.5 rad/s, respectively. When they are coupled face to face (as shown in the following figure) they rotate with a common angular speed co due to frictional forces, then what is the change in kinetic energy (0) of the wheels due to frictional forces? Before coupling After coupling Select one: a. -68.10 b.136.20 C 68.10 O d.-136.20

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 54P: A cylinder with rotational inertia I1=2.0kgm2 rotates clockwise about a vertical axis through its...

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