Human Work and Power

	Determine personal work and power while climbing stairs.
	Determine personal daily basal metabolic rate.
	Determine time to burn excess fat reserves.

Meter stick, bathroom scale, and stopwatch.

This lab works best with a group of four students.

1. One person in the group should create a data table to record the following:

Each persons mass in kg.

Height of one flight and two flights of stairs at the emergency exits.

Time for each person to climb one and two flights of stairs.

2. Return to the lab and enter the data into the Human Work Data Collection Tool. Calculate:

	Your Work and Power to climb the stairs,
	The Energy you consumed to climb the stairs,
	Your personal daily Basal Metabolic Rate (BMR) in Calories to maintain your weight,
	Time required to burn off an extra 300 Calorie candy bar.

Equations:

	1 kcal = 4186 J = 1 Calorie
	Work = ∆PE = m* g * h
	Power = Work/time
	Energy = Calories/second
	Basal Metabolic Rate = 2.87 X 10^-4 Calories/(second*kg)
	Fat Energy Content = 9.3 Calories/g
	1 lb = 453.6 grams

3. PHY 111 read Heat pages 292 - 294. PHY 112 read 14-1 page 417 and 15-3 page 449.

There is no written Lab Homework, but the Lab Report for the group is due at the next class.