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Work/Rest Cycles Murrell’s formula for calculating the
Chapter 4, Problem 51A(choose chapter or problem)
Problem 51A
Work/Rest Cycles Murrell’s formula for calculating the total amount of rest, in minutes, required after performing a particular type of work activity for 30 minutes is given by the formula
where w is the work expended in kilocalories per minute, kcal/min. Source: Human Factors in Engineering and Design.
a. A value of 5 for w indicates light work, such as riding a bicycle on a flat surface at 10 mph. Find R(5).
b. A value of 7 for w indicates moderate work, such as mowing grass with apushmower on level ground. Find R(7).
c. Find R′(5) and R′(7) and compare your answers. Explain whether these answers make sense.
Questions & Answers
QUESTION:
Problem 51A
Work/Rest Cycles Murrell’s formula for calculating the total amount of rest, in minutes, required after performing a particular type of work activity for 30 minutes is given by the formula
where w is the work expended in kilocalories per minute, kcal/min. Source: Human Factors in Engineering and Design.
a. A value of 5 for w indicates light work, such as riding a bicycle on a flat surface at 10 mph. Find R(5).
b. A value of 7 for w indicates moderate work, such as mowing grass with apushmower on level ground. Find R(7).
c. Find R′(5) and R′(7) and compare your answers. Explain whether these answers make sense.
ANSWER:
Solution :
Step 1 :
In this problem, we have to find .