A 039-Kg Block on a Horizontal Frictionless Surface Is Attached to to an Ideal

question 47

Multiple Choice

A 0.39-kg block on a horizontal frictionless surface is attached to an ideal spring whose force constant (spring constant) is $570 \mathrm {~N} / \mathrm { m } .$ The block is pulled from its equilibrium position at x = 0.000 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 position of the block is $x = 0.057 \mathrm {~m}$ its kinetic energy is closest to

• A) 0.90 J.
• B) 0.84 J.
• C) 0.95 J.
• D) 1.0 J.
• E) 1.1 J.

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Definitions:

LIFO Periodic

A method of inventory valuation where the last items placed in inventory are the first ones to be recorded as sold, used in periodic inventory accounting systems.

Cost of Goods Sold

Expenses directly linked to the creation of goods sold by a business, such as materials and labor.

Inventory Units

The individual items or quantifiable segments of products that a business holds in its inventory, each possibly having a different value or cost basis.

Perpetual LIFO

Perpetual Last-In-First-Out is an inventory cost method assuming that the last items added to inventory are the first sold, continually updating inventory and cost of goods sold values.