A 040-Kg Mass Attached to the End of a String Swings

question 25

Multiple Choice

A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the string makes an angle of 40 degrees below the horizontal, the speed of the mass is 5.0 m/s. What is the magnitude of the tension in the string at this instant?

• A) 9.5 N
• B) 3.0 N
• C) 8.1 N
• D) 5.6 N
• E) 4.7 N

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Definitions:

Column Percentages

Percentages that represent the portion each category within a column constitutes of the column's total, often used in crosstabulation tables to analyze categorical data.

Poisson Distribution

A probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space.

Significance Level

The significance level is a threshold in hypothesis testing, beyond which an observed effect is considered statistically significant, typically set at 0.05.

Fixed Interval

A concept in operant conditioning referring to a schedule of reinforcement where rewards are given after a specific, constant amount of time has passed.