1
AIPMT 2003
+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 2002
+4
-1
A particle A is dropped from a height and another particle B is projected in horizontal direction with speed of 5/sec from the same height then correct statement is
A
particle A will reach at ground first with respect to particle B
B
particle B will reach at ground first with respect to particle A
C
both particles will reach at ground simultaneously
D
both particles will reach at ground with same speed.
3
AIPMT 2002
+4
-1
An object of mass 3 kg is at rest. Now a force of $$\overrightarrow F$$ = 6t2 $$\widehat i$$ + 4t $$\widehat j$$ is applied on the object then velocity of object at t = 3 sec. is
A
18$$\widehat i$$ + 3$$\widehat j$$
B
18$$\widehat i$$ + 6$$\widehat j$$
C
3$$\widehat i$$ + 18$$\widehat j$$
D
18$$\widehat i$$ + 4$$\widehat j$$
4
AIPMT 2001
+4
-1
If $$\left| {\overrightarrow A + \overrightarrow B } \right| = \left| {\overrightarrow A } \right| + \left| {\overrightarrow B } \right|$$ then angle between A and B will be
A
90o
B
120o
C
0o
D
60o.
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