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

Question

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

Quizplus · Accepted Answer

The Answer of 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

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