1
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Change Language
A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45o, the speed of the car is
A
20 m s$$-$$1
B
30 m s$$-$$1
C
5 m s$$-$$1
D
10 m s$$-$$1
2
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Change Language
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along
A
a line perpendicular to the plane of rotation
B
the line making an angle of 45o to the plane of rotation
C
the radius
D
the tangent to the orbit
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
A small mass attached to a string rotates on a frictionless table top as shown. If the tension in the string is increased by pulling the string causing the radius of the circular motion to decrease by a factor of 2, the kinetic energy of the mass will

AIPMT 2011 Mains Physics - Rotational Motion Question 58 English
A
decrease by a factor of 2
B
remain constant
C
increase by a factor of 2
D
increase by a factor of 4
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpendicular to its length is $$I$$0. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is
A
$${I_0} + M{L^2}/2$$
B
$${I_0} + M{L^2}/4$$
C
$${I_0} + 2M{L^2}$$
D
$${I_0} + M{L^2}$$
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