1
AIEEE 2005
+4
-1
The moment of inertia of a uniform semicircular disc of mass $$M$$ and radius $$r$$ about a line perpendicular to the plane of the disc through the center is
A
$${2 \over 5}M{r^2}$$
B
$${1 \over 4}Mr$$
C
$${1 \over 2}M{r^2}$$
D
$$M{r^2}$$
2
AIEEE 2004
+4
-1
One solid sphere $$A$$ and another hollow sphere $$B$$ are of same mass and same outer radii. Their moment of inertia about their diameters are respectively $${I_A}$$ and $${I_B}$$ such that
A
$${I_A} < {I_B}$$
B
$${I_A} > {I_B}$$
C
$${I_A} = {I_B}$$
D
$${{{I_A}} \over {{I_B}}} = {{{d_A}} \over {{d_B}}}$$ where $${d_A}$$ and $${d_B}$$ are their densities.
3
AIEEE 2004
+4
-1
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which on of the following will not be affected ?
A
Angular velocity
B
Angular momentum
C
Moment of inertia
D
Rotational kinetic energy
4
AIEEE 2003
+4
-1
A particle performing uniform circular motion has angular frequency is doubled & its kinetic energy halved, then the new angular momentum is
A
$${L \over 4}$$
B
$$2L$$
C
$$4L$$
D
$${L \over 2}$$
EXAM MAP
Medical
NEET