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AIPMT 2007 Physics and Chemistry Paper
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© examsnet.com
Question : 10
Total: 100
A mass of
2.0
kg
is put on a flat pan attached to a vertical spring fixed on the ground as shown in the figure. The mass of the spring and the pan is negligible. When pressed slightly and released the mass executes a simple harmonic motion. The spring constant is
200
N
/
m
. What should be the minimum amplitude of the motion so that the mass gets detached from the pan (Take
g
=
10
m
/
s
2
)
4.0
cm
8.0
cm
10.0
cm
Any value less than
12.0
cm
Validate
Solution:
For given conditions
m
g
=
m
e
2
a
=
k
a
⇒
a
=
mg
k
=
2
×
10
200
=
0.1
=
10
cm
© examsnet.com
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