When a 020-Kg Block Is Suspended from a Vertically Hanging Spring, It

question 54

Multiple Choice

When a 0.20-kg block is suspended from a vertically hanging spring, it stretches the spring from its original length of 0.040 m to 0.045 m. The same block is attached to the same spring and placed on a horizontal, frictionless surface as shown. The block is then pulled so that the spring stretches to a total length of 0.15 m. The block is released at time t = 0 s and undergoes simple harmonic motion.
-What is the total mechanical energy of the system at any instant?

• A)0.25 J
• B)0.49 J
• C)0.98 J
• D)4.4 J
• E)9.8 J

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Definitions:

Air Pump

An air pump is a device used to move air either into or out of a particular space or object, commonly used for inflating tires, aquatic tanks, air mattresses, and various laboratory and industrial applications.

Manifest Content

According to Freud, the remembered story line of a dream (as distinct from its latent, or hidden, content).

Freud

Sigmund Freud, an Austrian neurologist who founded psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst.

Dream

A series of thoughts, images, and sensations occurring in a person's mind during sleep.