1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two discs are rotating about their axes, normal to the discs and passing through the centres of the discs. Disc D1 has 2 kg mass and 0.2 m radius and initial angular velocity of 50 rad s$$-$$1. Disc D2 has 4 kg mass, 0.1 m radius and initial angular velocity of 200 rad s$$-$$1. The two discs are brought in contact face to face, with their axes of rotation coincident. The final angular velocity (in rad s$$-$$1) of the system is
A
60
B
100
C
120
D
40
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as shown in figure. When string is cut, the initial angular acceleration of the rod is

NEET 2013 Physics - Rotational Motion Question 70 English
A
$${{2g} \over L}$$
B
$${{2g} \over {2L}}$$
C
$${{3g} \over {2L}}$$
D
$${g \over L}$$
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A small object of uniform density rolls up a curved surface with an initial velocity 'v'. It reaches upto a maximum height of $${{3{v^2}} \over {4g}}$$ with respect to the initial position. The object is
A
hollow sphere
B
disc
C
ring
D
solid sphere
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through

AIPMT 2012 Mains Physics - Rotational Motion Question 61 English
A
B
B
C
C
D
D
A
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