A Weight Is Oscillating on the End of a Spring

question 387

Multiple Choice

A weight is oscillating on the end of a spring (see figure) .The position of the weight relative to the point of equilibrium is given by , where y is the displacement (in meters) and t is the time (in seconds) .Find the times when the weight is at the point of equilibrium (y = 0) for . ​ ​
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• A)0.05sec, 0.49sec, 0.94sec
• B)0.05sec, 0.05sec, 0.94sec
• C)-0.40sec, 0.49sec, 0.94sec
• D)-0.40sec, 0.49sec, -0.40sec
• E)0.05sec, -0.40sec, 0.94sec

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Definitions:

Linear Effects

A relationship in statistical models where the change in the outcome variable is directly proportional to the change in the predictor variables.

Best Predictor

The variable or factor most strongly associated with or capable of predicting the outcome of interest.

Calorie Content

The amount of energy in food or drink, measured in calories, that can be metabolized by the body.

Linear Effects

In modeling, the proportional change in an outcome resulting from a one-unit change in independent variables assuming all other variables are held constant.