) A scientist measures the acceleration due to gravity by timing the fall of a 0
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Question
) A scientist measures the acceleration due to gravity by timing the fall of a 0.5 kg mass from a height of 10 feet. Consider each of the following sources of error. Label each as random or systematic.
a. The fall of the mass is slowed by air resistance.
b. The distance is measured with a measuring tape whose smallest increment between marks is an inch.
c. The scientist measures the height from the top on the mass to the ground, instead of from the bottom of the mass to the ground.
d. The scientist repeats the measurement and gets a slightly different time for the fall.
e. The scientist uses a stopwatch to time the fall. There can be some error in manually starting and stopping the timer to coincide with the release of the mass and when the mass hits the ground.
Explanation / Answer
a. The fall of the mass is slowed by air resistance.---------------- systamatic error as this is governed by constant accleration
b. The distance is measured with a measuring tape whose smallest increment between marks is an inch.--------------------------------systamatic error
c. The scientist measures the height from the top on the mass to the ground, instead of from the bottom of the mass to the ground.-----------random error
d. The scientist repeats the measurement and gets a slightly different time for the fall.----randiom error
e. The scientist uses a stopwatch to time the fall. There can be some error in manually starting and stopping the timer to coincide with the release of the mass and when the mass hits the ground.-------------------------random error
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