Which one of the following statements is not true for a body vibrating in simple harmonic motion when damping is present?
18 Energy in Oscillations

Quiz
•
Physics
•
12th Grade
•
Medium
Bernard Rand
Used 5+ times
FREE Resource
24 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The damping force is always in the opposite direction to the velocity.
The damping force is always in the opposite direction to the acceleration.
The presence of damping gradually reduces the maximum potential energy of the system.
The presence of damping gradually reduces the maximum kinetic energy of the system.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A body executes simple harmonic motion. Which one of the graphs, A to D, best shows the relationship between the kinetic energy, Ek, of the body and its distance from the centre of oscillation?
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A body executes simple harmonic motion. The potential energy, the kinetic energy and total energy are measured as a function of displacement x. Which of the following statements is true?
Kinetic energy is maximum when x = 0
Total energy is zero, when x = 0
Kinetic energy is maximum when x is maximum
Potential energy is maximum when x = 0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a string XY supporting a heavy pendulum P and four pendulums A, B, C and D of smaller mass.
Pendulum P is set in oscillation perpendicular to the plane of the diagram.
Which one of the pendulums, A to D, then oscillates with the largest amplitude?
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A periodic force is applied to a lightly-damped object causing the object to oscillate.
The graph shows how the amplitude A of the oscillations varies with the frequency f of the periodic force.
Which one of the following statements best describes how the shape of the curve would differ if the damping had been greater?
the curve would be lower at all frequencies
the curve would be higher at all frequencies
the curve would be unchanged except at frequencies above the resonant frequency where it would be lowe
the curve would be unchanged except at frequencies above the resonant frequency where it would be higher
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following statements always applies to a damping force acting on a vibrating system?
It is in the same direction as the acceleration.
It is in the same direction as the displacement.
It is in the opposite direction to the velocity.
It is proportional to the displacement.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is maximum value of kinetic energy in SHM
½mω2A2
mω2A2
½mω2x2
Amax
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