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The force of friction
The amount of forces acting on the horizontal axis
The pendulum can't stop instantaneously, and once it does stop, it is pulled down by gravity, thus keeping it oscillating.
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A wave-like motion
A motion of moving back and forth at a regular interval
A motion of moving back and forth
A motion of moving back and forth at an irregular interval
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It moves back and forth with a varying period.
It moves back and forth, reaching different heights each time.
An object only moving with a vertical velocity.
If there is not friction nor air resistance acting on the pendulum, then it could swing forever.
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You could estimate the gravitational force or acceleration acting on the pendulum.
You could use it to measure the angular momentum acting on the bob.
You could measure the variance of mass from initial drop to final resting height.
You could estimate the distance of the pendulum from the center of Earth.
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Length
Distribution of mass
Gravitational acceleration
A & B
A & C
A, B & C
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Precision
Accuracy
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IV = time, DV = mass
IV = distance from starting point, DV = time
IV = distance from starting point, DV = time
IV = time, DV = distance from starting point
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