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Phy 201

The problem:

Answer the following:

How accurately do you think you can measure the time between two events

using the TIMER program?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

This depends on the length of time we are timing. If the time is

greater than 2 seconds then I feel we can get a fairly precise time.

However, if we need to time something for less than .5 seconds then we

will lose precision due to human error and the lack of precision of the

timer program.

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What is the shortest time interval you think you would be able to

measure with reasonable accuracy?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

For the human to be able to have enough time to react efficiently, then

we are at least looking at 1 second and I would be more comfortable

with 2 seconds.

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How does the percent error in timing intervals change as the time

between the events gets smaller?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

As the events get smaller our error gets larger. Not only does our

human have to react quicker, but the timer program counts in increments

and not continuous.

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How accurately are you able to measure the positions of the ball and

the pendulum in the initial video?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

This depends on many variables like camera position, which frame we are

looking at, and etc. There were a few frames where the pendulum was

blurred and I was unsure where the pendulum exactly was. Then other

times the pendulum and ball was clear, but the clock was in between

times. So in some frames I could be real precise while in others I had

a large percent of uncertainty.

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