Two Objects, Each of Weight W, Hang Vertically by Spring

question 20

Multiple Choice

Two objects, each of weight W, hang vertically by spring scales as shown in the figure. The pulleys and the strings attached to the objects have negligible weight, and there is no appreciable friction in the pulleys. The reading in each scale is

• A) W.
• B) more than W, but not quite twice as much.
• C) less than W.
• D) 2W.
• E) more than 2W.

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Definitions:

Labor

The effort that people contribute to the production of goods and services in an economy, typically measured in terms of hours worked.

Production Function

A mathematical equation that describes the maximum amount of output that can be produced from a given set of inputs.

Labor Input

This denotes the amount of work effort, measured in hours or the number of employees, used in the production of goods and services.

Techniques of Production

The various methods and technologies used in the process of producing goods and services.