1
AIPMT 2002
MCQ (Single Correct Answer)
+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$$\widehat j$$
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
If kinetic energy of a body is increased by 300% then percentage change in momentum will be :
A
100%
B
150%
C
265%
D
73.2%
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force F is applied at height h from the lowest point. For the maximum acceleration of centre of mass, which is correct ?
A
h = R
B
h = 2R
C
h = 0
D
no relation between h and R.
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A point P consider at contact point of a wheel on ground which rolls on ground without slipping then value of displacement of point P when wheel completes half of rotation (if radius of wheel is 1 m)
A
2 m
B
$$\sqrt {{\pi ^2} + 4} m$$
C
$$\pi \,m$$
D
$$\sqrt {{\pi ^2} + 2} \,m$$