•  The switch on the force plate should still be at the setting marked
 

•   Zero the force plate without any mass on it.  Start to acquire data, step gently onto it, remain motionless for a moment, and then jump UP and OFF the plate, landing on the floor.  You will break the plate if you land on it.  Put a copy of these data into the box below Question 3 of the worksheet and answer Question 3c.
 
•  If you are interested, you can calculate the ratio of your peak force minus your weight over your weight.  A ratio greater than 1 indicates good physical condition.  (Personal trainers and fitness clubs sometimes use force plates for tests of this kind.)
 
•   While collecting data and standing on the force plate, pick up a mass or a book of at least 500 g and drop it from one hand to the other.  Please make sure to catch the object, or at least ensure that the object does not drop onto the force plate.  Make sure you understand the shape of the curve before moving on to the next step. Paste these data as your response to Question 5a.
 
•   Then acquire data while standing on the plate and throwing and a mass or book up in the air and catching it.  Paste these data as your response to Question 5b.
 
•   Answer Question 6 individually.  We shall no longer repeat the admonitions about how to save and submit your files.