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Length to the bob affects the period.

Initial amplitude, θ0, affects the period for θ0 > 1

Mass affects the damping force

If you know these variables, which you can measure, you can set up a pretty decent equation approximating the harmonic motion of the pendulum's mass as a function of time.

Now, a lot of people would tell you that θ0 isn't a variable and that the spring constant is the actual third variable. WRONG! Why would we want to constrain ourselves to pendulum motions where the initial angle is less than 10? Also, how could something with the word "constant" in it be a variable? The spring constant varies from one system to another, not within any particular system, and who's going to change systems every measurement? Rather, it's something that you measure once, get a number for, and then proceed to use it over and over again.

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Q: What three variables affect the swing of a pendulum?
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How do you solve the pendulum room in mystery mania?

Attach the rope to the hook on the ceiling, attach the magnet, attach a cannon ball, then swing it at the door. You need to do it three times. Good luck!


What are the parts of a pendulum?

There are three parts to a pendulum. The bearing, the bob, and the string or wire supportig it.


How can you time a pendulum's swing?

Observe the pendulum at the centre of the swing, as this is when it moves fastest, so you can judge the time most accurately. Start the stopwatch as it passes this point, counting zero as it does, then one, two, three etc. each time it passes that point in the same direction until you have reached a total of 20 (see comment below), when you stop the watch. Divide the answer by 20. The number of swings you count should be sufficient to reduce the start-stop timing errors to a minimum. I suggest that the time you measure should be at least 30 seconds, and a minute would be better if the pendulum continues to swing that long. Repeat the timing another two times, and take the average unless one reading is about a swing's worth out as you might then have miscounted! The most common error is to say 'one' as you start the watch instead of 'nought'.


What is the period of a pendulum that takes 3 seconds to move forward and another 3 seconds to come back'?

The period is the time taken to complete one cycle. In this case it would be three seconds. The frequency of the swing is the inverse of the period. 1/3Hz


What will happen if three variables were changed?

Please provide a full question.

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Attach the rope to the hook on the ceiling, attach the magnet, attach a cannon ball, then swing it at the door. You need to do it three times. Good luck!


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