A Mass on a Spring Vibrates in Simple Harmonic Motion

question 59

Multiple Choice

A mass on a spring vibrates in simple harmonic motion at a frequency of 2 Hz and an amplitude of 7 cm.If a timer is started when its displacement is a maximum (hence x = 7 cm when t = 0) ,what is the speed of the mass when t = 7 s?
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• A) zero
• B) 87.965 m/s
• C) 9.016 m/s
• D) 7 m/s
• E) ​43.982 m/s

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Definitions:

Independent Variables

Factors in an experiment that are manipulated or changed by the researcher to observe their effects on the dependent variables.

Dependent Variables

Variables in an experiment or study that are expected to change as a result of changes made to the independent variable(s), essentially measuring the outcome of the study.

Extraneous Variables

Elements not of interest in a research study that could impact the results if not properly controlled.

Experimental Groups

Groups in a study that receive the treatment or intervention, to be compared against control groups.