Lesson 13.1.2
13.1.2 Displacement and velocity-time graphs of oscillations Quiz: Pearson Edexcel Physics, Unit 13
20 questions
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Lesson 13.1.2, Displacement and velocity-time graphs of oscillations: 20 multiple choice questions for the Pearson Edexcel Physics (9PH0), Unit 13: Oscillations, written with Revision Ninja.
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The 20 questions
-
What does the gradient of a displacement-time graph give?
- The acceleration at that point.
- The period of the motion.
- The displacement at that point.
- The velocity at that point.
-
What does the gradient of a velocity-time graph give?
- The displacement at that point.
- The frequency of the motion.
- The energy of the oscillator.
- The acceleration at that point.
-
On a displacement-time graph for SHM, where is the velocity greatest?
- At the equilibrium position, where the graph is steepest.
- At the maximum displacement, where the graph is flat.
- Velocity is the same at all points.
- At zero displacement only in the first cycle.
-
On a displacement-time graph for SHM, where is the acceleration greatest in magnitude?
- At the maximum displacement, where the restoring force is largest.
- At the equilibrium position, where the speed is largest.
- At the midpoint between zero and maximum displacement only.
- Acceleration is zero at all points.
-
What is the phase relationship between velocity and displacement in SHM?
- Velocity is always opposite to displacement.
- Velocity lags displacement by a half cycle.
- Velocity leads displacement by a quarter cycle (π/2).
- Velocity and displacement are in phase.
-
If x = A cos(ω t), what is the displacement at t = 0?
- -A
- 0
- A ω
- A
-
A simple harmonic oscillator has x = 0.04 cos(2 π t) metres. What is its displacement at t = 0.25 s?
- 0 m
- 0.02 m
- 0.04 m
- -0.04 m
-
For the same oscillator (x = 0.04 cos(2 π t) m), what is the maximum speed?
- 0.25 m s^-1
- 1.6 m s^-1
- 0.13 m s^-1
- 0.04 m s^-1
-
For the same oscillator (x = 0.04 cos(2 π t) m), what is the maximum acceleration?
- 9.8 m s^-2
- 0.25 m s^-2
- 1.6 m s^-2
- 0.08 m s^-2
-
An oscillator has period 2.0 s. What is the time between successive zero crossings of its displacement?
- 1.0 s
- 2.0 s
- 4.0 s
- 0.5 s
-
A SHM oscillation has amplitude 3.0 cm and frequency 2.0 Hz. What is its maximum speed?
- 0.19 m s^-1
- 0.094 m s^-1
- 0.38 m s^-1
- 1.2 m s^-1
-
For an oscillator with x = A sin(ω t), what is the velocity at t = 0?
- A ω
- A ω^2
- -A ω
- 0
-
Why is the velocity of an oscillator zero at maximum displacement?
- The period of the oscillation is zero at each extreme of its motion, so it stops.
- The restoring force is zero at the extremes, which is why the object stops moving.
- At maximum displacement the velocity is zero, so the object momentarily stops.
- The object has zero mass at the extremes of its motion, so it stops for an instant.
-
For x = 0.1 sin(3t) m, what is the maximum acceleration?
- 0.9 m s^-2
- 0.3 m s^-2
- 2.7 m s^-2
- 0.1 m s^-2
-
For x = A cos(ω t), at what time does the displacement first become zero?
- t = π / (2 ω)
- t = π / (4 ω)
- t = 2 π / ω
- t = π / ω
-
On an acceleration-displacement graph for SHM, what is the gradient?
- ω^2
- -ω^2
- ω
- -ω
-
For SHM of amplitude A, what is the speed at displacement A/2, as a fraction of the maximum speed?
- 0.25
- 0.50
- about 0.87
- about 0.71
-
What is the shape of a velocity-time graph for SHM compared with its displacement-time graph?
- It is shifted by half a cycle so the peaks coincide with the displacement peaks.
- It is shifted by a quarter cycle, so its peaks occur where the displacement is zero.
- It is a straight line for all time.
- It is identical in shape and in phase.
-
Which graph is used to find the acceleration at a point in SHM?
- A displacement-time graph, using its peak height
- A velocity-time graph, using its gradient
- An energy-time graph only
- A displacement-time graph, using its area
-
An oscillator has x = 0.02 sin(4t) m. What is its maximum acceleration?
- 0.32 m s^-2
- 0.08 m s^-2
- 1.28 m s^-2
- 0.02 m s^-2
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