Question $11 \square$

Students build an oscillator by hanging an object from an ideal vertical spring. The object has a label that indicates its mass is $2.50 \mathrm{~kg}$. The spring is to have a spring constant of $100.0 \frac{\mathrm{N}}{\mathrm{m}}$. The students use these values to calculate the period of oscillation to be 0.993 . The students set the oscillator into motion and use a motion sensor to determine experimentally that it takes 4.62 seconds for the object to complete five oscillations. Which of the following is a reasonable explanation for the discrepancy between the calculated and experimental periods? A The calculated value of the period is incorrect. B The mass of the object is actually larger than its labeled value. c There is an error in the use of the motion sensor. D There is friction related to the motion of the spring. E The spring constant is actually larger than its design value.

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