9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is ascended, some food energy is being converted to gravitational potential energy. (a) If the student has a mass of 75 kg, how tall a ladder is needed to burn off one Calorie (4190 J)? (b) Conversely, if the student only has a 3.5 m ladder, how much additional mass must he carry up with him to burn off the Calorie?
9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is ascended, some food energy is being converted to gravitational potential energy. (a) If the student has a mass of 75 kg, how tall a ladder is needed to burn off one Calorie (4190 J)? (b) Conversely, if the student only has a 3.5 m ladder, how much additional mass must he carry up with him to burn off the Calorie?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
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Problem 74AP: A 50.0-kg student evaluates a weight loss program by calculating the number of times she would need...
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9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is ascended, some food energy is being converted to gravitational potential energy. (a) If the student has a mass of 75 kg, how tall a ladder is needed to burn off one Calorie (4190 J)? (b) Conversely, if the student only has a 3.5 m ladder, how much additional mass must he carry up with him to burn off the Calorie?
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