Freefall occurs wherein the only pressure acting on an object is gravity. Since gravitational acceleration on planet is constant, the distance things falls is proportional to the time invested falling. In this experiment, you will experimentally recognize the acceleration due to gravity in addition to experimentation your very own reaction time! Reaction time is the moment it takes because that you to reaction to an event: in this case, the fallout’s of a meter stick or dollar bill. Is your reaction time quicker than acceleration as result of gravity?

Objective

Experimentally determine acceleration due to gravity.

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Do all objects loss at the same rate? go the weight of the thing matter? What is the relationship between distance and time because that free-falling objects?

Materials

Friend, partner or helperSmall ballMeter stickDollar billStopwatchNotebook and also pencil

Procedure

Have a partner hold the meter stick for this reason the 0 side is just over your hand.Have the companion start the timer as soon as that or she fall the meter stick and stop the timer as quickly as you capture it.Record the distance follow me the meter stick and the time.Do this numerous times for different lengths follow me the meter stick. What is the relationship in between the time and also the distance the meter stick traveled?Graph her results. Time will be ~ above the x-axis, distance traveled in meters will be top top the y-axis.Use the complying with equation come calculate the moment it takes for the meter stick come fall. How close is your calculated time to your stopwatch value?


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Where d is the distance the thing traveled, in metersg is the gravitational acceleration top top Earth, equal to 9.81m/s2t is the time in seconds.Calculate the acceleration at any allude on the graph. How nearby is it to the gravitational acceleration that Earth?


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Repeat the experiment with a dissension bill. Usage the above equation come calculate just how long it will take because that the size of the dollar to pass with your fingers. Can you catch it?

Results

Graphing results will present that street traveled is in proportional to the square of the time spent falling. Her calculated acceleration should be close to 9.81 m/s2. Human reaction time is roughly 0.25 secs which, because that the majority of people, is not fast sufficient to record a disagreement bill.

Why?

The graph you create will show that the longer the meter pole falls, the quicker it end up moving. This defines the curve in the graph: since of the consistent acceleration created by the force of gravity, the velocity of an item will obtain increasingly faster.

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When objects room in true cost-free fall, lock will ultimately reach their terminal velocity once the downward force from gravity and also the upward pressure from waiting resistance room equal. A an excellent anaology would certainly be a skydiver: even though heaviness still acts on her body, she wouldn’t get any type of faster because the force of the waiting pushing earlier is for this reason great. In this experiment, waiting resistance and also drag room not really an issue since the objects fall really short distances.


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