question_answer

The heart rate (number of heart beats/minute) scales as 1/L, where L is the characteristic length of the mammal. (a) Can you explain this ? (b) The scale factor of a human relative to a monkey is about 2.5. What is the monkey's heart rate?

Answer:

                Human heart rate is about 70 beats/minute. More the characteristic length of the mammal, smaller is the heart beat rate. As scale factor of a human relative to a rhesus monkey is about 2.5, therefore, monkey's heart rate\[=\text{7}0\times \text{2}.\text{5}=\text{175}\].