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Question

The actual value of the acceleration of gravity is 9.8 m/s. Physics students in a laboratory experiment use a pendulum to determine the acceleration of gravity. Their experimental value is 9.2m/s.
What is their percent error?

A
0.60%
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B
60%
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C
6.5%
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D
61%
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E
6.1%
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Solution

The correct option is E 6.1%
Absolute error in g: Δg=|9.89.2|=0.6 m/s
Percentage error =Δggactual×100=0.69.8×100=6.1 %

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