APS Excellence in Physics Education Award
November 2019

Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Gravitational acceleration too big

Return to the Tracker forum
Login to post to this thread

Free fall - value of g too big
Christof Wiedemair
3 Posts

I filmed a free fall of a metal ball and analyzed the movement with tracker. However, no matter what I do I always get ca. 11 m/s^2 for g (parabolic fit to y-t-data). What am I doing wrong? Do I have to keep a minimum distance to the scene to prevent distortion? I filmed it from ca. 4 m distance. free fall distance was about 80 cm.
I use an Iphone 12 and the latest version of Tracker (6.0.10).
Thank you in advance

Attached File: free_fall_tracker_g.jpg

Current Replies - View all
Re: Free fall - value of ...   (Wolfgang - )
Re: Free fall - value of ...   (Christof Wiedemair - )
OSP Projects:
Open Source Physics - EJS Modeling
Physlet Physics
Physlet Quantum Physics
STP Book