A 15-Kg Child Is Sitting on a Playground Teeter-Totter, 1

question 77

Multiple Choice

A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the magnitude of the minimum force, applied 0.30 m on the other side of the pivot, that is needed to make the
Child lift off the ground?

• A) 66 N
• B) 75 N
• C) 740 N
• D) 44 N
• E) 23 N

---

Definitions:

Lipreading

The practice of understanding speech by visually interpreting the movements of the lips, face, and tongue, used by individuals with hearing loss.

Hearing-Impaired

A term describing individuals who have partial or total inability to hear; may also be referred to as hearing loss.

Facial Expressions

The movements of the facial muscles that convey emotions or reactions to stimuli, serving as a key aspect of non-verbal communication.

Opacity of the Lens

A condition, often referred to as cataract, where the lens of the eye becomes cloudy or opaque, affecting vision.