Question

A
solid disk of mass 15kg and diameter 60cm is spinning
counterclockwise in the plane of the page. The initial angular
velocity of the disk is 24rad/s. If after 20 seconds the angular
velocity is found to be 12 rad/s, the average torque exerted on the
disk during that time has been

a) 0.405 m•N out of the page

b) 0.405 m•N into the page

c) 0.604 m•N to the right

d) 0.810m•N out of the page

e) 0.810 m•N into the page

Answer #1

Point Pis on the rim of a large
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Pis on the x-axis. A net applied CW torque of 20.0
m-N causes the wheel to undergo a uniform angular acceleration. The
magnitude of the total acceleration (m/s2) at point
Pwhen t = 15.0 s is? The angular velocity of the...

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