Three Masses Are Located as Follows: a 3

question 39

Multiple Choice

Three masses are located as follows: a 3.0-kg mass is at the origin, a 4.5-kg mass at (0.0 m, 4.0 m) , and a 2.5-kg mass at (3.0 m, 0.0 m) . What is the gravitational energy of the system of masses?
G = 6.67 x 10^-11 N·m²/kg².

• A) -3.8 × 10^-10 J
• B) -3.9 × 10^-10 J
• C) -5.4 × 10^-10 J
• D) -3.2 × 10^-10 J
• E) -3.5 × 10^-10 J

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Definitions:

Contractures

The permanent and painful tightening of muscles, tendons, ligaments, or skin that prevents normal movement of the associated body part.

Flexor Muscles

Muscles that decrease the angle between the bones of a joint, thus performing a bending movement, usually found in the limbs.

Muscle Mass Loss

A reduction in the size or quantity of muscle fibers, often associated with aging or inactivity.

Fracturing

The process of breaking or cracking a bone or hard material.