A Shopper Steps on an Escalator Moving Downward at a Constant

question 45

Multiple Choice

A shopper steps on an escalator moving downward at a constant speed toward the bargain basement in a large department store.On his way down,the normal force exerted on him by the step of the escalator is

• A)greater than his weight when he is off the escalator.
• B)equal to his weight when he is off the escalator.
• C)less than his weight when he is off the escalator.
• D)dependent on how fast the escalator is moving.
• E)unknown; insufficient information is given to answer correctly.

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Definitions:

Desirable Weight

A weight considered optimal for health and well-being, based on factors like height, age, sex, and body composition.

Miss America

A long-standing beauty pageant in the United States that awards scholarships to young women and evaluates them based on talent, interview, and physical appearance.

Underweight Range

A classification for individuals with a body mass index (BMI) below the normal range, suggesting insufficient body fat and possibly malnutrition.

Waist-To-Hip Ratio

A measurement used to assess the distribution of body fat by comparing the circumference of the waist to that of the hips.