1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop after 2$$\pi $$ revolutions is :
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Two particles A and B are moving in uniform circular motion in concentric circles of radii rA and rB with speed vA and vB respecitively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be :
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has speed of 20 cm/s. How much work is needed to stop it?
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A solid sphere is rotating freely about its
symmetry axis in free space. The radius of
the sphere is increased keeping its mass same.
Which of the following physical quantities
would remain constant for the sphere?
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