1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
A light rod of length $$l$$ has two masses m1 and m2 attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is
A
$${{{m_1}{m_2}} \over {{m_1} + {m_2}}}{l^2}$$
B
$${{{m_1} + {m_2}} \over {{m_1}{m_2}}}{l^2}$$
C
$$\left( {{m_1} + {m_2}} \right){l^2}$$
D
$$\sqrt {{m_1}{m_2}} \,{l^2}$$
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A disc and a sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first?
A
Both reach at the same time
B
Depends on their masses
C
Disc
D
Sphere
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?
A
11 MR2/32
B
9 MR2/32
C
15 MR2/32
D
13 MR2/32
4
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rad s$$-$$2. Its net acceleration in m s$$-$$2 at the end of 2.0 s is approximately
A
6.0
B
3.0
C
8.0
D
7.0
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Class 12