1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A projectile is fired from the surface of the earth with a velocity of 5 m s$$-$$1 and angle $$\theta $$ with the horizontal. Another projectile fired from another planet with a velocity of 3 m s$$-$$1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in m s$$-$$2) is
(Given g = 9.8 m s$$-$$2)
A
3.5
B
5.9
C
16.3
D
110.8
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle is moving such that is position coordinates (x, y) are (2 m, 3 m) at time t = 0, (6 m, 7 m)
at time t = 2 s and (13 m, 14 m) at time t = 5 s.

Average velocity vector $$\left( {{{\overrightarrow v }_{av}}} \right)$$ from t = 0 to t = 5 s is
A
$${1 \over 5}\left( {13\widehat i + 14\widehat j} \right)$$
B
$${7 \over 3}\left( {\widehat i + \widehat j} \right)$$
C
$$2\left( {\widehat i + \widehat j} \right)$$
D
$${11 \over 5}\left( {\widehat i + \widehat j} \right)$$
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration a ?
A
$${{2ma} \over {g + a}}$$
B
$${{2ma} \over {g - a}}$$
C
$${{ma} \over {g + a}}$$
D
$${{ma} \over {g - a}}$$
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A system consists of three masses m1, m2 and m3 connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction = $$\mu $$). The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is (Assume m1 = m2 = m3 = m)

AIPMT 2014 Physics - Laws of Motion Question 22 English
A
$${{g\left( {1 - g\mu } \right)} \over 9}$$
B
$${{2g\mu } \over 3}$$
C
$${{g\left( {1 - 2\mu } \right)} \over 3}$$
D
$${{g\left( {1 - 2\mu } \right)} \over 2}$$
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