An object with a mass of $3 k g$ $3 kg$ is traveling in a circular path of a radius of $3 m$ $3 m$ . If the object's angular velocity changes from $2 H z$ $2 Hz$ to $17 H z$ $17 Hz$ in $8 s$ $8 s$ , what torque was applied to the object?

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Answer 1 · 2016-02-08T11:18:39

$L = 405 \cdot \frac{π}{4}$ $L=405*pi/4$

$L=(Delta omega)/(Delta t)*I$
$L=(2*pi*17-2.pi*2)/(8)*I$
$L=2*pi(15)/8*I$
$L=(15*pi/4)*I$
$L=m*r^2=3*3^2=3*9=27$
$L=15*pi/4*27$
$L=405*pi/4$

An object with a mass of 3 kg3kg 3 kg is traveling in a circular path of a radius of 3 m3m3 m. If the object's angular velocity changes from 2 Hz2Hz 2 Hz to 17 Hz17Hz 17 Hz in 8 s8s 8 s, what torque was applied to the object?