A 0025-Kg Block on a Horizontal Frictionless Surface Is Attached to to an Ideal

question 28

Multiple Choice

A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest. The block then executes simple harmonic motion along the horizontal x-axis. When the displacement is what is the kinetic energy of the block?

• A) 0.44 J
• B) 0.41 J
• C) 0.46 J
• D) 0.49 J
• E) 0.52 J

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Definitions:

Pectoralis Minor

A thin, triangular muscle located beneath the pectoralis major in the chest, contributing to movements of the shoulder.

Rhomboideus Major

A skeletal muscle on the back that connects the spine to the scapula, playing a key role in retracting and stabilizing the shoulder.

Erect Posture

The alignment of the body in an upright position, supported by the skeletal and muscular systems, allowing humans to stand and move efficiently.

Spinalis Muscle

A column of muscles located closest to the spine, part of the erector spinae group, which extends and assists in the rotation of the spine.