1
AIPMT 2008
+4
-1
The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axes is
A
$$\sqrt 2 :1$$
B
$$\sqrt 2 :\sqrt 3$$
C
$$\sqrt 3 :\sqrt 2$$
D
$$1:\sqrt 2$$
2
AIPMT 2007
+4
-1
A uniform rod AB of length $$l$$ and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A is ml2/3, the initial angular acceleration of the rod will be

A
$${{mgl} \over 2}$$
B
$${3 \over 2}gl$$
C
$${{3g} \over {2l}}$$
D
$${{2g} \over {3l}}$$
3
AIPMT 2007
+4
-1
A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the particle with respect to origin O is LA when it is at A and LB when it is at B, then
A
LA = LB
B
the relationship between LA and LB depends upon the slope of the line AB
C
LA < LB
D
LA > LB.
4
AIPMT 2007
+4
-1
A wheel has angular acceleration of 3.0 rad/sec2 and an initial angular speed of 2.00 rad/sec. In a time of 2 sec it has rotated through an angle (in radian) of
A
10
B
12
C
4
D
6
EXAM MAP
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