1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
A block of mass $$m$$ is connected to another block of $$mass$$ $$M$$ by a spring (massless) of spring constant $$k.$$ The block are kept on a smooth horizontal plane. Initially the blocks are at rest and the spring is unstretched. Then a constant force $$F$$ starts acting on the block of mass $$M$$ to pull it. Find the force of the block of mass $$m.$$
A
$${{MF} \over {\left( {m + M} \right)}}$$
B
$${{mF} \over M}$$
C
$${{\left( {M + m} \right)F} \over m}$$
D
$${{mF} \over {\left( {m + M} \right)}}$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A particle of mass 0.3 kg subjected to a force $$F=-kx$$ with $$k=15$$ $$N/m$$. What will be its initial acceleration if it is released from a point 20 cm away from the origin?
A
$$15\,\,\,\,m/{s^2}$$
B
$$3\,\,\,m/{s^2}$$
C
$$10\,\,\,m/{s^2}$$
D
$$5\,\,\,m/{s^2}$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A smooth block is released at rest on a $${45^ \circ }$$ incline and then slides a distance $$'d'$$. The time taken to slide is $$'n'$$ times as much to slide on rough incline than on a smooth incline. The coefficient of friction is
A
$${\mu _k} = \sqrt {1 - {1 \over {{n^2}}}} $$
B
$${\mu _k} = 1 - {1 \over {{n^2}}}$$
C
$${\mu _k} = \sqrt {1 - {1 \over {{n^2}}}} $$
D
$${\mu _s} = 1 - {1 \over {{n^2}}}$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A block is kept on a frictionless inclined surface with angle of inclination $$'\,\alpha \,'.$$ The incline is given an acceleration $$a$$ to keep the block stationary. Then $$a$$ is equal to AIEEE 2005 Physics - Laws of Motion Question 120 English
A
$$g$$ $$cosec$$ $$\alpha $$
B
$$g/tan$$ $$\alpha $$
C
$$g$$ $$tan$$ $$\alpha $$
D
$$g$$
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