A concrete mixer truck (see below) has a large drum on the back that rotates in order to agitate concrete (so the concrete doesn't solidify during transport). The drum has a diameter of about 2.2 meters. When operating at its normal operational speed, the drum goes through a complete rotation every 3.7 seconds.    (1) Find the angular speed of rotating drum in radians per second.  (2) Find the centripetal acceleration of a point on the surface of the drum.  (3) If we can approximate the drum as a solid cylinder of mass 23,100kg, how much rotational kinetic energy does the drum have when it is rotating at its normal operational speed? The moment of inertia for a solid cylinder is  Isolid cylinder=1/2MR2

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 30P: A point on a rotating turntable 20.0 cm from the center accelerates from rest to a final speed of...
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A concrete mixer truck (see below) has a large drum on the back that rotates in order to agitate concrete (so the concrete doesn't solidify during transport). The drum has a diameter of about 2.2 meters. When operating at its normal operational speed, the drum goes through a complete rotation every 3.7 seconds. 

 

(1) Find the angular speed of rotating drum in radians per second. 

(2) Find the centripetal acceleration of a point on the surface of the drum. 

(3) If we can approximate the drum as a solid cylinder of mass 23,100kg, how much rotational kinetic energy does the drum have when it is rotating at its normal operational speed? The moment of inertia for a solid cylinder is  Isolid cylinder=1/2MR2

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