A SPOT is provided near Psycho Mouse where the horizontal
distance to Drop Tower is measured carefully. Use this SPOT to
complete the work that follows.
Observations While Standing
(a) Determine how high the
cabin is lifted. Explain how you calculated this figure (show your
(b) Time for vehicle to ascend tower.
(c) Determine the distance of true "free fall". Explain how you
made this measurement (show your work!)
- Hold a small tethered plastic washer steady in front of you
while the car is still at the top of the tower. Release the
washer as the car begins to fall. Describe the motion of the
washer during the ride as the car moves straight down.
- From your perspective in the cabin, what is the mathematical
description of the path traced out by the washer as it falls?
Would an observer on the ground describe the path differently?
- Briefly describe how the force you feel changes during the
ride. Be sure to describe the ascent, free fall, and braking
portions of the ride.
IN ORDER TO EARN FULL CREDIT YOU SHOULD SHOW
YOUR METHOD, INCLUDING EQUATIONS, AS APPLICABLE
- Calculate the duration of the free fall period from your
free fall distance.
- Calculate the maximum speed attained (ie., at the end of the
free fall period).
- How many g’s did you experience during free fall? Justify
- If the mass of the loaded car is 750 kg, how much work is
done to raise the car to the top of the tower? (Neglect the
energy losses due to friction)
- Neglecting friction and assuming a constant rate of lifting,
how much power is expended by the motor as it raises one car
to the top of the tower?
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