1
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
2
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Change Language
Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 3.0 m and weights 100 kg. The 55 kg man walks up to the 65 kg man and sits with him. If the boat is in still water the centre of mass of the system shifts by :
A
3.0 m
B
2.3 m
C
zero
D
0.75 m
3
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
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Change Language
ABC is an equilateral triangle with O as its centre. $${\overrightarrow F _1},{\overrightarrow F _2}$$ and $${\overrightarrow F _3}$$ represent three forces acting along the sides AB, BC and AC respectively. If the total torque about O is zero then magnitude of $${\overrightarrow F _3}$$ is

AIPMT 2012 Prelims Physics - Rotational Motion Question 61 English
A
F1 + F2
B
F1 $$-$$ F2
C
$${{{F_1} + {F_2}} \over 2}$$
D
2(F1 + F2)
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