Lesson 3.6.1.2
3.6.1.2 Simple harmonic motion Quiz: AQA Physics, Unit 6
20 questions
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Lesson 3.6.1.2, Simple harmonic motion: 20 multiple choice questions for the AQA Physics (7408), Unit 6: Further mechanics and thermal physics (A-level only), written with Revision Ninja.
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The 20 questions
-
A body performs simple harmonic motion when its acceleration is:
- proportional to its velocity
- constant and in the same direction as its displacement
- proportional to its displacement and directed away from equilibrium
- proportional to its displacement and directed towards the equilibrium position
-
In the defining equation a = -omega^2 x, the negative sign shows that:
- omega is negative
- the displacement is negative at all times
- the acceleration is always in the same direction as the displacement
- the acceleration is always opposite in direction to the displacement
-
For x = A cos(omega t), the displacement at t = 0 is:
- zero
- A, the amplitude
- omega A
- -A
-
The maximum speed in SHM is:
- omega^2 A
- omega^2 A^2
- A / omega
- omega A
-
The maximum acceleration in SHM is:
- omega A^2
- omega^2 A
- A / omega^2
- omega A
-
In SHM, the velocity is zero when the displacement equals:
- omega
- A / 2
- the amplitude, plus or minus A
- zero
-
The gradient of a displacement-time graph gives:
- energy
- acceleration
- velocity
- force
-
An SHM oscillation has amplitude 0.050 m and frequency 2.0 Hz. What is the maximum speed?
- 0.63 m s^-1
- 6.3 m s^-1
- 0.31 m s^-1
- 0.10 m s^-1
-
An oscillator of amplitude 0.050 m and frequency 2.0 Hz has what maximum acceleration?
- 3.9 m s^-2
- 7.9 m s^-2
- 16 m s^-2
- 0.63 m s^-2
-
A displacement is x = 0.040 cos(10 t) m. What is the displacement at t = 0.10 s?
- 0.0084 m
- 0.040 m
- 0.022 m
- 0.0067 m
-
An SHM oscillator has period 0.50 s. What is its angular frequency?
- 1.0 rad s^-1
- 3.1 rad s^-1
- 12.6 rad s^-1
- 25 rad s^-1
-
An oscillator with amplitude 0.10 m and angular frequency 5.0 rad/s is at displacement 0.060 m. What is its speed?
- 0.80 m s^-1
- 0.30 m s^-1
- 0.50 m s^-1
- 0.40 m s^-1
-
For SHM, the magnitude of acceleration is greatest:
- at the equilibrium position
- at all times, as it is constant
- when the displacement is greatest in magnitude, and zero at equilibrium
- zero at the extremes of motion
-
In SHM, the speed is greatest:
- at half the amplitude
- at the extremes of motion
- when the acceleration is greatest
- at the equilibrium position
-
At which point in SHM is the kinetic energy a maximum?
- each turning point
- where displacement equals the amplitude
- where velocity is zero
- the equilibrium position
-
If the amplitude of an SHM system is doubled with the same frequency, its maximum speed and maximum acceleration:
- both halve
- both quadruple
- double but the period halves
- both double
-
An SHM oscillator has a = -64 x (SI units). At displacement x = 0.020 m, what is the acceleration?
- -0.16 m s^-2
- -2.6 m s^-2
- +1.3 m s^-2
- -1.3 m s^-2
-
An SHM oscillator has frequency 3.0 Hz and amplitude 0.020 m. What is its speed when the displacement is 0.010 m?
- 1.1 m s^-1
- 0.57 m s^-1
- 0.33 m s^-1
- 0.19 m s^-1
-
A student says the velocity-time graph of SHM is a straight line. Which response is best?
- Incorrect: the velocity-time graph is a parabola for all SHM.
- Incorrect: the v-t graph is sinusoidal, because its gradient is the acceleration, which varies with displacement.
- Correct: the speed in SHM is constant throughout.
- Correct: SHM has constant acceleration, so velocity changes linearly.
-
An SHM oscillator has period 0.80 s. How long does it take to travel from maximum displacement to the equilibrium position?
- 0.80 s
- 0.20 s
- 0.40 s
- 0.10 s
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