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An Object Made of Two Disc Shaped Sections a and B,as

Question 31

Multiple Choice

An object made of two disc shaped sections A and B,as shown in the figure is rotating about an axis through the center of disc A) The masses and the radii of discs A and B are respectively 2 kg and 0.2 kg,and 25 cm and 2.5 cm.If the axial frictional torque is 0.2 Nm,how long will it take for the object to come to a stop if it is rotating with an angular velocity of -2 $\pi$ rad/s? $An object made of two disc shaped sections A and B,as shown in the figure is rotating about an axis through the center of disc A) The masses and the radii of discs A and B are respectively 2 kg and 0.2 kg,and 25 cm and 2.5 cm.If the axial frictional torque is 0.2 Nm,how long will it take for the object to come to a stop if it is rotating with an angular velocity of -2 \pi rad/s? A) 0.36 s B) 2.28 s C) 0.73 s D) 1.14 s$

A) 0.36 s
B) 2.28 s
C) 0.73 s
D) 1.14 s

An Object Made of Two Disc Shaped Sections a and B,as

Multiple Choice

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