Suppose You Slowly, and at Constant Speed, Lift a Book

question 61

Multiple Choice

Suppose you slowly, and at constant speed, lift a book weighing 12 N from the floor to a shelf 2 m above the floor. Neglect air resistance. While you are lifting, the net force on the book is

• A) 12 N directed upward.
• B) 12 N directed downward.
• C) less than 12 N, by an amount that depends on the speed of lifting.
• D) zero.
• E) more than 12 N, by an amount that depends on the speed of lifting.

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Definitions:

Nonparametric Test

A statistical test that does not assume a specific distribution shape for the data, making it useful for data that does not meet the assumptions required for parametric tests.

Productivity

An economic measure of output per unit of input, often used to gauge efficiency in production or work.

Dexterity

Refers to the skill in performing tasks, especially with the hands.

Spearman's Rank Correlation

An unparameterized metric for ranking correlation that evaluates the extent to which two variables' relationship can be depicted through a monotonic function.