An Iron Ball Hangs from a 21

question 62

Multiple Choice

An iron ball hangs from a 21.5-m steel cable and is used in the demolition of a building at a location where the acceleration due to gravity is 9.78 m/s². The ball is swung outward from its equilibrium position for a distance of 4.20 m. Assuming the system behaves as a simple pendulum, find the maximum speed of the ball during its swing.

• A)4.45 m/s
• B)2.83 m/s
• C)17.8 m/s
• D)1.71 m/s
• E)9.78 m/s

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Definitions:

Bilaterally Symmetrical

An organismal structure characteristic where the body can be divided into identical left and right halves along a single plane.

Pentaradially Symmetrical

A form of symmetry found in some organisms, particularly sea stars, where their body can be divided into five or more equal parts.

Radially Symmetrical

An organism is described as radially symmetrical when its body structure can be sliced into symmetrical halves through any number of planes along its center.

Water Vascular System

Unique hydraulic system of echinoderms; functions in locomotion and feeding.