One End of a 1

question 31

Multiple Choice

One end of a 1.0-m string is fixed; the other end is attached to a 2.0-kg stone.The stone swings in a vertical circle, passing the top point at 4.0 m/s.The tension force of the string at this point is about:

• A)0 N
• B)12 N
• C)20 N
• D)32 N
• E)52 N

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Definitions:

Positive Correlation

A relationship between two variables where both variables move in the same direction.

Correlational Study

A research method used to examine the relationship between two or more variables without manipulating them, identifying patterns or associations.

Double-Blind Experiment

An experimental setup where both the subjects of the experiment and the persons administering the experiment are unaware of the specifics of the test scenario to prevent bias.

Negative Correlation

A relationship between two variables in which one variable increases as the other decreases.