A Small but Dense 2

question 61

Multiple Choice

A small but dense 2.0-kg stone is attached to one end of a very light rod that is 1.2 m long.The other end of the rod is attached to a frictionless pivot.The rod is raised until it is vertical,with the stone above the pivot.The rod is released and the stone moves in a vertical circle with no air resistance.What is the tension in the rod as the stone moves through the bottom of the circle?

• A)20 N
• B)40 N
• C)60 N
• D)80 N
• E)100 N

---

Definitions:

Torque Converter

A type of fluid coupling that allows the engine to spin somewhat independently of the transmission, used in automatic transmissions to improve smoothness.

Hydrodynamics

The science of forces acting on, or exerted by, liquids, usually, but not always, in confined circuits.

Hydraulics Principles

Fundamental concepts governing the behavior and operation of hydraulic systems, including fluid dynamics, pressure, and flow control.

Stratosphere

The layer of the Earth's atmosphere located above the troposphere and below the mesosphere, characterized by a gradual increase in temperature with altitude.