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 40 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 2004
MCQ (Single Correct Answer)
+4
-1
A round disc of moment of inertia $$I$$2 about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia $$I$$1 rotating with an angular velocity $$\omega $$ about the same axis. The final angular velocity of the combination of discs is
A
$${{{I_2}\omega } \over {{I_1} + {I_2}}}$$
B
$$\omega $$
C
$${{{I_1}\omega } \over {{I_1} + I{}_2}}$$
D
$${{\left( {{I_1} + {I_2}} \right)\omega } \over {{I_1}}}$$
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
A particle of mass m1 is moving with a velocity v1 and another particle of mass m2 is moving with a velocity v2. Both of them have the same momentum but their different kinetic energies are E1 and E2 respectively. If m1 > m2 then :
A
E1 < E2
B
$${{{E_1}} \over {{E_2}}} = {{{m_1}} \over {{m_2}}}$$
C
E1 > E2
D
E1 = E2