1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
A force $$\overrightarrow F = \left( {5\overrightarrow i + 3\overrightarrow j + 2\overrightarrow k } \right)N$$ is applied over a particle which displaces it from its origin to the point $$\overrightarrow r = \left( {2\overrightarrow i - \overrightarrow j } \right)m.$$ The work done on the particle in joules is
A
$$+10$$
B
$$+7$$
C
$$-7$$
D
$$+13$$
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
A body of mass $$' m ',$$ acceleration uniformly from rest to $$'{v_1}'$$ in time $${T}$$. The instantaneous power delivered to the body as a function of time is given by
A
$${{m{v_1}{t^2}} \over {{T}}}$$
B
$${{mv_1^2t} \over {T^2}}$$
C
$${{m{v_1}t} \over {{T}}}$$
D
$${{mv_1^2t} \over {{T}}}$$
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particles takes place in a plane. It follows that
A
its kinetic energy is constant
B
is acceleration is constant
C
its velocity is constant
D
it moves in a straight line
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
A spring of spring constant $$5 \times {10^3}\,N/m$$ is stretched initially by $$5$$ $$cm$$ from the unstretched position. Then the work required to stretch it further by another $$5$$ $$cm$$ is
A
$$12.50$$ $$N$$-$$m$$
B
$$18.75$$ $$N$$-$$m$$
C
$$25.00$$ $$N$$-$$m$$
D
$$625$$ $$N$$-$$m$$
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