5. A solid sphere of radius r = 34.5 cm and mass m = 1.80 kg starts from rest and rolls without slipping down a 30° incline that is 10.0 m long. a) Find the translational and rotational speeds when it reaches the bottom. b) Find the ratio of the rotational kinetic energy to the translational kinetic energy without using any numbers. What do you notice?

5. A solid sphere of radius r = 34.5 cm and mass m = 1.80 kg starts from rest and rolls without slipping down a 30° incline that is 10.0 m long. a) Find the translational and rotational speeds when it reaches the bottom. b) Find the ratio of the rotational kinetic energy to the translational kinetic energy without using any numbers. What do you notice?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Dynamics

Section8.5: Rotational Kinetic Energy

Problem 8.4QQ: Two spheres, one hollow and one solid, are rotating with the same angular speed around an axis...

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5. A solid sphere of radius r = 34.5 cm and mass m = 1.80 kg starts from rest and rolls without slipping
down a 30° incline that is 10.0 m long. a) Find the translational and rotational speeds when it reaches
the bottom. b) Find the ratio of the rotational kinetic energy to the translational kinetic energy without
using any numbers. What do you notice?

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