Three Boxes Slide on a Frictionless Horizontal Surface When Pulled

question 101

Multiple Choice

Three boxes slide on a frictionless horizontal surface when pulled by a force of magnitude F. When we compare the tensions T₁ and T₂ with the force F, we find that

• A) T₁ = T₂ = F.
• B) T₁ = F > T₂.
• C) F > T₁ = T₂.
• D) F > T₁ > T₂.
• E) F − T₁ < T₁ − T₂.

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Definitions:

Natural Monopoly

A monopoly that exists when increasing returns to scale provide a large cost advantage to having all output produced by a single firm.

Network Externalities

The effect that an additional user of a good or service has on the value of that product to others, often positive, as in the case of telecommunications networks.

Monopolist

A monopolist is a single supplier in a market who has significant control over prices and the availability of a product or service.

Economies of Scale

Economies of scale are cost advantages that enterprises obtain due to size, output, or scale of operation, with cost per unit of output generally decreasing with increasing scale.