Inside of a Train a Ball of Weight W Is

question 20

Multiple Choice

Inside of a train a ball of weight W is hanging by a light wire at rest from the ceiling. The wire makes an angle θ with the ceiling, as shown in the figure. Which one of the following conditions must be true about the tension T in the wire?

• A)T sin θ = W
• B)T cos θ = W
• C)T tan θ = W
• D)T = W
• E)T = ma

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Definitions:

Constant Returns To Scale

A situation in which increasing all inputs by a certain factor leads to an increase in output by the same factor, indicating proportionate scaling in production.

Production

This refers to the process of creating goods and services through the combination of labor, materials, and technology.

Cost

The monetary value required to produce or acquire goods or services.

Competitive Firm

An individual company operating in a competitive market, where it has little to no control over the market price of its goods or services, and must accept the market price as given.