While Spinning Down from 500

question 20

Multiple Choice

While spinning down from 500.0 rpm to rest, a solid uniform flywheel does 5.1 kJ of work. If the radius of the disk is 1.2 m, what is its mass?

• A) 5.2 kg
• B) 4.4 kg
• C) 6.0 kg
• D) 6.8 kg

---

Definitions:

Regression Equation

A formula that describes the relationship between a dependent variable and one or more independent variables.

Length

The measurement or extent of something from end to end; the greater of two or the greatest of three dimensions of an object.

Plot

The sequence of events or main story in a narrative or literary work.

Interaction Term

In statistics, an interaction term is used in models to determine if the effect of two or more variables on a response variable is not additive, indicating that the variables interact in how they influence the response.