A 080-Kg Object Tied to the End of a 2 $\degree$

question 62

Multiple Choice

A 0.80-kg object tied to the end of a 2.0-m string swings as a pendulum.At the lowest point of its swing,the object has a kinetic energy of 10 J.Determine the speed of the object at the instant when the string makes an angle of 50 $\degree$ with the vertical.

• A)5.6 m/s
• B)4.4 m/s
• C)3.3 m/s
• D)5.0 m/s
• E)6.1 m/s

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Definitions:

Slope

In statistics, the rate at which one variable changes over another, specifically in the context of linear regression.

Simple Linear Regression

This statistical technique involves modeling the correlation between a dependent variable and one independent variable through the application of a linear equation based on collected data.

Response Variable

The variable in an experiment or statistical model that changes in response to the manipulation of the explanatory variable.

Explanatory Variable

A variable in statistical modeling that is posited to cause or influence changes in a response variable; also known as an independent variable.