A hula-hoop with a radius of 0.35 m is rotating at 15 radians per second. It weighs 1.7 kg. (A) How fast is a point on the moving in meters per second? (B) Calculate the rotational energy of the hula hoop. (C) If it were not rotating and instead of moving in a straight line, how fast would it have to go in order to have the same energy?
A hula-hoop with a radius of 0.35 m is rotating at 15 radians per second. It weighs 1.7 kg. (A) How fast is a point on the moving in meters per second? (B) Calculate the rotational energy of the hula hoop. (C) If it were not rotating and instead of moving in a straight line, how fast would it have to go in order to have the same energy?
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter10: Fixed-axis Rotation
Section: Chapter Questions
Problem 102P: A sphere of mass 1.0 kg and radius 0.5 m is attached to the end of a massless rod of length 3.0 m....
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A hula-hoop with a radius of 0.35 m is rotating at 15 radians per second. It weighs 1.7 kg.
(A) How fast is a point on the moving in meters per second?
(B) Calculate the rotational energy of the hula hoop.
(C) If it were not rotating and instead of moving in a straight line, how fast would it have to go in order to
have the same energy?
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