1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A roller coaster is designed such that riders experience ''weightlessness'' as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between
A
16 m/s and 17 m/s
B
13 m/s and 14 m/s
C
14 m/s and 15 m/s
D
15 m/s and 16 m/s
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Sand is being dropped on a conveyer belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant velocity of $$\upsilon $$ m/s will be :
A
$${{Mv} \over 2}$$ newton
B
zero
C
M$$v$$ newton
D
2 M$$v$$ newton
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
AIPMT 2008 Physics - Laws of Motion Question 22 English

Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is
A
$${{\sqrt 3 } \over 4}N$$
B
$${\sqrt 3 }$$ N
C
0.5 N
D
1.5 N
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90o. The moment of inertia of the bent rod about an axis passing through the bending point and perpendicular to the plane defined by the two halves of the rod is
A
$${{M{L^2}} \over 6}$$
B
$${{\sqrt 2 M{L^2}} \over {24}}$$
C
$${{M{L^2}} \over {24}}$$
D
$${{M{L^2}} \over {12}}$$