The record time for a Tour de France cyclist to ascend the...

Name: Problem 57, Chapter 11: College Physics: A Strategic Approach
Uploaded: 2020-11-07T08:15:21-08:00
Duration: 3 min
Channel: Shahab Ullah
Description: The record time for a Tour de France cyclist to ascend the famed 1100-m-high Alpe d'Huez was 37.5 min, set by Marco Pantani in 1997. Pantani and his bike had a mass of 65 kg. a. How many Calories did he expend during this climb? b. What was his average metabolic power during the climb?

The record time for a Tour de France cyclist to ascend the famed 1100-m-high Alpe d'Huez was 37.5 min, set by Marco Pantani in 1997. Pantani and his bike had a mass of 65 kg. a. How many Calories did he expend during this climb? b. What was his average metabolic power during the climb?

The record time for a Tour de France cyclist to ascend the famed 1100-m-high Alpe d'Huez was 37.5 min, set by Marco Pantani in 1997. Pantani and his bike had a mass of 65 kg.
a. How many Calories did he expend during this climb?
b. What was his average metabolic power during the climb?

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Key Concepts

Metabolic Power

This concept describes the rate at which energy is expended during an activity, defined as the total energy used over the time period of the activity. By calculating the average metabolic power, one can determine the average rate of energy output during the climb, which is useful for understanding the athlete's performance in terms of power sustained over time.

Gravitational Potential Energy

This concept refers to the energy possessed by an object due to its position in a gravitational field. It is calculated using the formula PE = m * g * h, where m is the mass, g is the acceleration due to gravity, and h is the height. In the context of a cyclist climbing a hill, it represents the minimum mechanical energy required to ascend the elevation.

Unit Conversion for Energy

In many energy calculations, it is crucial to convert between units to match the context of the problem. For instance, when mechanical work is calculated in Joules, converting to dietary Calories (noting that 1 Calorie ? 4184 Joules) allows one to relate the mechanical energy to nutritional energy expenditure.

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