document.write( "Question 1128404: Consider a spinning CD which has a mass of 15.0 g. If the radius of the CD is 8.3 cm, and if it rotates about its centre at an angular frequency of 44.4 rad/s, what is its rotational kinetic energy (in J)? Assume the CD is a solid disk (i.e. ignore the hole in the center.). \n" ); document.write( "

Algebra.Com's Answer #745078 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "For a disk of mass  M  and radius  R,  the moment of inertia  I  is\r\n" );
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document.write( "    I = ..\r\n" );
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document.write( "If the disk is spinning with angular speed   radians per second, its rotational kinetic energy is\r\n" );
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document.write( "    K.E. =  =  = ..\r\n" );
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\n" ); document.write( "\n" ); document.write( "What you need to do now is to substitute your data; to take your calculator and to complete calculations on your own.\r
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\n" ); document.write( "\n" ); document.write( "Be sure to have the mass in kilograms and the radius in meters.\r
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\n" ); document.write( "\n" ); document.write( "The reference is this link.\r
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\n" ); document.write( "\n" ); document.write( "https://www.unr.edu/Documents/science/physics/labs/180/11_Rotational_Kinetic_Energy.pdf\r
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