1
AIPMT 2003
+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
$${{\left( {M - 4m} \right)\omega } \over {M + 4m}}$$
2
AIPMT 2002
+4
-1
A point P consider at contact point of a wheel on ground which rolls on ground without slipping then value of displacement of point P when wheel completes half of rotation (if radius of wheel is 1 m)
A
2 m
B
$$\sqrt {{\pi ^2} + 4} m$$
C
$$\pi \,m$$
D
$$\sqrt {{\pi ^2} + 2} \,m$$
3
AIPMT 2002
+4
-1
A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force F is applied at height h from the lowest point. For the maximum acceleration of centre of mass, which is correct ?
A
h = R
B
h = 2R
C
h = 0
D
no relation between h and R.
4
AIPMT 2002
+4
-1
A disc is rotating with angular speed $$\omega$$. If a child sits on it, what is conserved
A
linear momentum
B
angular momentum
C
kinetic energy
D
potential energy.
EXAM MAP
Medical
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