A 4-Kg Block Is Connected by Means of a Massless

question 52

Multiple Choice

A 4-kg block is connected by means of a massless rope to a 2-kg block as shown in the figure. Complete the following statement: If the 4-kg block is to begin sliding, the coefficient of static friction between the 4-kg block and the surface must be

• A)less than zero.
• B)greater than 2.
• C)greater than 1, but less than 2.
• D)greater than 0.5, but less than 1.
• E)less than 0.5, but greater than zero.

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Definitions:

Prelinguistic Speech

Forerunner of linguistic speech; utterance of sounds that are not words. Includes crying, cooing, babbling, and accidental and deliberate imitation of sounds without understanding their meaning.

Gestures

Nonverbal movements or signs made with parts of the body, used to communicate ideas, emotions, or commands.

Symbolic Gestures

Actions performed to convey messages or emotions without using words, often culturally specific.

First Words

The initial set of words a child learns and uses to communicate, often occurring between 10 to 15 months of age.