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**Unformatted text preview: **( ( )) 10.27: a) ω = α∆t = ( FR I ) ∆t = (18.0 N )( 2.40 m ) 2100 kg ⋅ m 2 (15.0 s ) = 0.3086 rad/s,
or 0.309 rad/s to three figures.
b) W = K 2 = (1 2 ) Iω2 = (1 2) × 2.00 kg ⋅ m 2 ( 0.3086 rad s ) 2 = 100 J.
c) From either P = τωave or P = W ∆t , P = 6.67 W. ( ) ...

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