Rotational Dynamics About a Fixed Axis: a Very Thin Uniform

question 87

Multiple Choice

Rotational dynamics about a fixed axis: A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower end. It starts out vertically from rest and falls, pivoting about the hinge. Just as it has rotated through an angle of 55.0°, what is the downward acceleration of the end farthest from the hinge?

• A) 5.02 m/s²
• B) 8.03 m/s²
• C) 9.80 m/s²
• D) 12.0 m/s²
• E) 19.6 m/s²

---

Definitions:

Infraction

A minor violation of a rule or law, often punishable by a fine rather than imprisonment.

Common Law

The law as found in the recorded judgments of the courts.

Environmental Nuisance

An act or condition that harms the environment, often by polluting or disrupting natural processes, and can negatively affect the health and well-being of communities.

Defendant

A person, company, or institution sued or accused in a court of law.