1
GATE ME 2016 Set 3
Numerical
+2
-0
A single degree of freedom spring-mass system is subjected to a harmonic force of constant amplitude. For an excitation frequency of $$\sqrt {{{3k} \over m}} ,$$ the ratio of the amplitude of steady state response to the static deflection of the spring is __________
2
GATE ME 2016 Set 2
Numerical
+2
-0
The system shown in the figure consists of block A of mass 5 kg connected to a spring through a massless rope passing over pulley B of radius r and mass 20 kg. The spring constant k is 1500 N/m. If there is no slipping of the rope over the pulley, the natural frequency of the system is_____________ rad/s.
3
GATE ME 2016 Set 1
+2
-0.6
A solid disc with radius a is connected to a spring at a point $$d$$ above the center of the disc. The other end of the spring is fixed to the vertical wall. The disc is free to roll without slipping on the ground. The mass of the disc is $$M$$ and the spring constant is $$K$$. The polar moment of inertia for the disc about its centre is $$J = {{M{a^2}} \over 2}$$

The natural frequency of this system in rad/s is given by

A
$$\sqrt {{{2K{{\left( {a + d} \right)}^2}} \over {3M{a^2}}}}$$
B
$$\sqrt {{{2K} \over {3M}}}$$
C
$$\sqrt {{{2K{{\left( {a + d} \right)}^2}} \over {M{a^2}}}}$$
D
$$\sqrt {{{K{{\left( {a + d} \right)}^2}} \over {M{a^2}}}}$$
4
GATE ME 2015 Set 3
+2
-0.6
Figure shows a single degree of freedom system. The system consists of a mass less rigid bar $$OP$$ hinged at $$O$$ and a mass $$m$$ at end $$P.$$ The natural frequency of vibration of the system is
A
$${f_n} = {1 \over {2\pi }}\sqrt {{k \over {4m}}}$$
B
$${f_n} = {1 \over {2\pi }}\sqrt {{k \over {2m}}}$$
C
$${f_n} = {1 \over {2\pi }}\sqrt {{k \over {m}}}$$
D
$${f_n} = {1 \over {2\pi }}\sqrt {{{2k} \over m}}$$
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