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Worksheets2 Waves - Pendulums (oscillators)
Total questions: 28
Worksheet time: 21mins
When measuring the period of the pendulum in order to find its period, when testing for string length, what variable(s) must be kept constant?
string length
mass of the plumb bob
amplitude
BOTH mass and amplitude
Which is NOT one of the variable we tested in the pendulum activities?
length of string
width of string
amplitude
mass of the plumb bob
How many variables are changed in a controlled experiment?
1
2
3
doesn't matter how many
Where does a pendulum have maximum potential energy?
equilibrium
between equilibrium and highest amplitude moving down
highest amplitude on either side of equilibrium
between equilibrium and highest amplitude moving up
Where does a pendulum have maximum kinetic energy?
equilibrium
between equilibrium and highest amplitude moving down
highest amplitude on either side of equilibrium
between equilibrium and highest amplitude moving up
What happens to the speed from A to B?
it stays the same
it speeds up
it slows down
Which type of energy does it lose from A to B
Gravitational potential
Elastic potential
Kinetic
Chemical
Which type of energy does it gain from A to B
Gravitational potential
Elastic potential
Kinetic
Chemical
What is happening to the total Mechanical Energy of the pendulum as it swings (conservation of energy)?
As one energy increases, the other decreases; the total mechanical energy of the system stays the same
Energy keeps increasing
The energy is destroyed
There is twice the energy at the end than at the start
Which of these things is NOT an example of a pendulum?
Which letter shows the cycle of a pendulum?
A
B
C
D
Which letter shows the amplitude of the pendulum?
A
B
C
D
Why should you find the average time of many cycles rather than just the time for 1 cycle?
The average is more accurate.
The average is easier to find.
Timing 1 cycle only is more accurate.
You can finish more quickly.
Which variable of the Pendulum Lab affected the PERIOD of the pendulum?
amplitude
length of string
mass
both mass and amplitude
Complete- The shorter the string, the _____________ the period of the pendulum.
greater
shorter
Complete - The longer the string, the ________ the Period of the pendulum.
greater
fewer
What is the PERIOD of a pendulum?
how many times the pendulum swings before it stops
how many times the pendulum passes a point in one second
the TIME one complete cycle (complete to and fro motion)
how far it oscillates from equilibrium
A pendulum has a period of 4 seconds, how many cycles will it undergo in 52 seconds?
208 cycles
104 cycles
13 cycles
42.0 cycles
What is the frequency of a pendulum?
how many times the pendulum swings before it stops
how many times a pendulum completes a cycle in one second
one complete cycle (complete to and fro motion)
one complete cycle bouncing up and down
What does the amplitude of a pendulum measure?
The distance from the top of the string to the mass at the end of the pendulum
where the force of gravity takes affect
how fast the pendulum moves back and forth
the distance from the highest point to the equilibrium point
A pendulum has a frequency of 2.5 Hz, what is the period of the pendulum?
40.0 s
4.0 s
0.4 s
0.04 s
Assume the pendulums oscillate for 1 minute. Which pendulum with complete more oscillations?
More massive pendulum at a greater amplitude
The shorter string length
The longer string length
Both will have the exact same number of oscillations
Which equation shows the correct way to find the average time of 3 cycles of 1.3 seconds, 1.4 seconds, and 1.8 seconds?
average time = 1.3 ÷ 3 + 1.4 + 1.8
average time = 1.3 + 1.4 + 1.8 ÷ 3
average time = (1.3 + 1.4 + 1.8) ÷ 3
average time = 1.3 + 1.4 + 1.8
How does MASS affect the period of the pendulum?
No effect
More massive, shorter period
More massive, longer period
How does the period of a pendulum with shorter string length compare to a longer string length?
No effect
Shorter string length, shorter period
Shorter string length, longer period
Two pendulums are oscillating and their motions are graphed. What can be 'said' about their respective 'motion'?
They are Out of Phase (180o Out of Phase )
They are perfectly In Phase
They are slightly Out of Phase
They are at the same position in their oscillations
Two pendulums are oscillating and their motions are graphed. What can be 'said' about their respective 'motion'?
They are Out of Phase (180o Out of Phase )
They are perfectly In Phase
They are slightly Out of Phase (90o Out of Phase)
They are at the same position in their oscillations
Assume graphed line A is the reference pendulum. You let two other oscillators/pendulums oscillate back and forth at the same string length.
Which of the following is TRUE?
Line B is exactly 180o Out of Phase of line A
They are all perfectly In Phase
Line C is exactly 90o Out of Phase of line A
Line C is 180o out of phase of line A while line B is 90o out of phase of line A
