A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is
4.5 J
9.0 J
12.0 J
18.0 J
Correct Answer :
B. 9.0 J
Related Questions
If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is
g/2
g/3
g/4
g/5
If g1 and g2 are the gravitational accelerations on two mountains A and B respectively, the weight of a body when transported from A to B will be multiplied by
g1
g2
g1/g2
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Equal to 1
Between 1 and 2
Greater than 2
The angle which an inclined surface makes with the horizontal when a body placed on it is on the point of moving down, is called
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Angle of friction
Angle of inclination
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30
50
60
80
The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at
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45°
60°
90°
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is
1.00 m/sec
1.57 m/sec
3.14 m/sec
6.28 m/sec
A projectile is thrown at an angle α to the horizontal with velocity v. It will have the maximum centripetal acceleration
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At the top of the trajectory
As it strikes the ground
Elsewhere
The vertical reaction at the support A of the structure shown in below figure, is 
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2 t
3 t
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Unstable
Neutral
None of the above
Minimum potential energy of a system will be in the position of
Stable equilibrium
Unstable equilibrium
Neutral equilibrium
All of the above
The shape of a suspended cable for a uniformly distributed load over it is
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Parabolic
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Cubic parabola
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Must be increased
Is not changed but weight of the bob is increased
Is not changed but weight of the bob is decreased
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Can be obtained by graphic statics
Cannot be obtained by graphic statics
May be obtained by graphic statics
Can be obtained by graphic statics by trial and error
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Always directed away from the centre, the point of reference
Proportional to the square of the distance from the point of reference
Proportional to the distance from the point of reference and directed towards it
Inversely proportion to the distance from the point of reference
The units of moment of inertia of an area are
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m4
m3
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4E
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Mr2
½ Mr2
Mr2
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Howe truss
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None of the above
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Circle and straight line
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The perpendicular to both the lines
None of these