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:

ANOVA Design

A statistical method and design of experiments aimed at comparing the means of three or more groups to understand if at least one group mean differs significantly.

Interaction

In statistics and research, the mutual or reciprocal actions or influence between variables or factors.

Complete Factorial Experiment

An experimental design in which each possible combination of variables and levels is tested.

Replicates

Repeated measurements or experiments conducted under identical conditions to estimate variability or to ensure reliability.