An Ideal Spring Is Hung Vertically from the Ceiling

question 28

Multiple Choice

An ideal spring is hung vertically from the ceiling. When a 2.0-kg mass hangs at rest from it the spring is extended 6.0 cm from its relaxed length. A downward external force is now applied to the mass to extend the spring an additional 10 cm. While the spring is being extended by the force, the work done by the spring is:

• A) -3.6 J
• B) -3.3 J
• C) -3.4 *10^-5 J
• D) 3.3 J
• E) 3.6 J

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Definitions:

Conversion Costs

The combination of direct labor and factory overhead costs; in lean accounting, the account in which is accumulated the costs of direct labor and factory overhead.

Manufacturing Overhead Control

This involves managing and recording all indirect production costs associated with manufacturing operations, including utilities, maintenance, and equipment depreciation.

Backflush Accounting

A simplification of the accounting system by eliminating the accumulation and transfer of product costs by departments (intermediate departmental work in process accounts), but instead pulls the material and conversion costs directly to finished goods.

Work in Process Inventories

Items in various stages of production but not yet completed, representing a component of a manufacturer's inventory.