1
AIEEE 2007
+4
-1
A $$2$$ $$kg$$ block slides on a horizontal floor with a speed of $$4m/s.$$ It strikes a uncompressed spring, and compress it till the block is motionless. The kinetic friction force is $$15N$$ and spring constant is $$10, 000$$ $$N/m.$$ The spring compresses by
A
$$8.5cm$$
B
$$5.5cm$$
C
$$2.5cm$$
D
$$11.0cm$$
2
AIEEE 2006
+4
-1
A mass of $$M$$ $$kg$$ is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of $${45^ \circ }$$ with the initial vertical direction is
A
$$Mg\left( {\sqrt 2 + 1} \right)$$
B
$$Mg\sqrt 2$$
C
$${{Mg} \over {\sqrt 2 }}$$
D
$$Mg\left( {\sqrt 2 - 1} \right)$$
3
AIEEE 2006
+4
-1
A ball of mass $$0.2$$ $$kg$$ is thrown vertically upwards by applying a force by hand. If the hand moves $$0.2$$ $$m$$ while applying the force and the ball goes upto $$2$$ $$m$$ height further, find the magnitude of the force. (consider $$g = 10\,m/{s^2}$$).
A
$$4N$$
B
$$16$$ $$N$$
C
$$20$$ $$N$$
D
$$22$$ $$N$$
4
AIEEE 2006
+4
-1
A particle of mass $$100g$$ is thrown vertically upwards with a speed of $$5$$ $$m/s$$. The work done by the force of gravity during the time the particle goes up is
A
$$-0.5J$$
B
$$-1.25J$$
C
$$1.25J$$
D
$$0.5J$$
EXAM MAP
Medical
NEET