1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
A wheel having moment of inertia 2 kg m2 about its vertical axis, rotates at the rate of 60 rpm about this axis. The torque which can stop the wheel's rotation in one minute would be
A
$${{2\pi } \over {15}}$$ N m
B
$${\pi \over {12}}$$ N m
C
$${\pi \over {15}}$$ N m
D
$${\pi \over {18}}$$ N m
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side $$l$$ cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram-cm2 units will be

AIPMT 2004 Physics - Rotational Motion Question 38 English
A
$${3 \over 4}$$m$$l$$2
B
2m$$l$$2
C
$${5 \over 4}$$m$$l$$2
D
$${3 \over 2}$$m$$l$$2
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity $$\omega $$. Four objects each of mass m, are kept gently to the opposite ends of two perpendicular diameters of the ring. The angular velocity of the ring will be :
A
$${{M\omega } \over {4m}}$$
B
$${{M\omega } \over {M + 4m}}$$
C
$${{\left( {M + 4m} \right)\omega } \over M}$$
D
$${{\left( {M - 4m} \right)\omega } \over {M + 4m}}$$
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
A solid cylinder of mass M and radius R rolls without slipping down an inclined plane of length L and height h. What is the speed of its centre of mass when the cylinder reaches its bottom ?
A
$$\sqrt {2gh} $$
B
$$\sqrt {{3 \over 4}gh} $$
C
$$\sqrt {{4 \over 3}gh} $$
D
$$\sqrt {4gh} $$
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