1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
A particle moves along a circle of radius $$\left( {{{20} \over \pi }} \right)$$ m with constants tangential acceleration. If the velocity of vthe particle is 80 m/s at the end of the second revoluation after motion has begun, the tangential acceleration is
A
40 m/s2
B
640$$\pi $$ m/s2
C
160$$\pi $$ m/s2
D
40$$\pi $$ m/s2
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
When a long spring is stretched by 2 cm, its potential energy is U. If the spring is stretched by 10 cm, the potential energy stored in it will be
A
U/5
B
5U
C
10U
D
25U
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A child is sitting on a swing. Its minimum and maximum heights from the ground 0.75 m and 2 m respectively, its maximum speed will be
A
10 m/s
B
5 m/s
C
8 m/s
D
15 m/s
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A particle is projected making an angle of 45o with horizontal having kinetic energy K. The kinetic energy at highest point will be
A
$${K \over {\sqrt 2 }}$$
B
$${K \over 2}$$
C
2K
D
K
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