A lawn mover has a flat, rod-like-shaped steel blade that rotates about its center. The mass of the blade is 0.65 kg and its length is 0.55 m. (a) What is the rotational energy of the blade if the blade has an angular speed of 3500 rpm (revolution per minute)? (b) If all of the rotational kinetic energy of the blade could be converted to gravitational energy, to what height would the blade rise?

A lawn mover has a flat, rod-like-shaped steel blade that rotates about its center. The mass of the blade is 0.65 kg and its length is 0.55 m. (a) What is the rotational energy of the blade if the blade has an angular speed of 3500 rpm (revolution per minute)? (b) If all of the rotational kinetic energy of the blade could be converted to gravitational energy, to what height would the blade rise?

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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