Particles (Mass of Each = 0

question 75

Multiple Choice

Particles (mass of each = 0.40 kg) are placed at the 60-cm and 100-cm marks of a meter stick of negligible mass. This rigid body is free to rotate about a frictionless pivot at the 0-cm end. The body is released from rest in the horizontal position. What is the magnitude of the initial linear acceleration of the end of the body opposite the pivot?

• A) 15 m/s²
• B) 9.8 m/s²
• C) 5.8 m/s²
• D) 12 m/s²
• E) 4.7 m/s²

---

Definitions:

Economies of Scale

Cost advantages that enterprises obtain due to their scale of operation, with cost per unit of output decreasing as scale increases.

Diseconomies of Scale

The phenomenon where production costs increase as a firm expands output, leading to reduced efficiency.

U-Shaped Long-Run Average Cost Curve

This describes the phenomenon where, over time, average costs first decrease with increased production, hit a minimum, and then increase with further production increase, forming a U-shape.

Minimum Cost

The lowest possible expense at which a particular set of goods or services can be produced or acquired.