## Trainers

Leong Tze Kwang

Zulhailah

Lawrence Wee

Prof Paul Lee

Date: 30 Jan 2019

Time: 0900 1700

Venue: NIE-7-B1-22

Software

https://phyphox.org/

Share with teachers

https://www.youtube.com/watch?time_continue=60&v=5c-91klR_kc What handphone data was oscillating when the phone was dropped for Atwood Machine

## My own learning

 data from one fo the groups arbitrarily https://docs.google.com/spreadsheets/d/1vySXTTOP--QQlJTkpoMy7DvgAi1Kvp-d7pnzvG7xRrw/edit?usp=sharing mphone*g - 0.2*g = (mphone + 0.2) a where mphone to be determine g  = 9.81 m/s^2 a is found from the phyphox data as about 1.1 m/s^2 I assume the data is for 200 gram as a counterweight for the pulley system therefore mphone =(0.2*a+0.2*g)/(g-a) =0.250 kg that can be verified from a weighing machine on the bench

 data from one fo the groups https://docs.google.com/spreadsheets/d/1vySXTTOP--QQlJTkpoMy7DvgAi1Kvp-d7pnzvG7xRrw/edit?usp=sharingusing excel and applying $$v = \int a dt$$ and  $$s = \int v dt$$
 only for Android users, enroll for the beta users program https://play.google.com/store/apps/details?id=de.rwth_aachen.phyphox&hl=en_SGand the update should be available after a few minutes

 benefits in the beta version can pick data and read off, no need to hotspot your phone and remote data into the laptops

 example of little zero error

 example of a large zero error can be overcome by rotating the phone from side to side to allow the phone to re-zero

 collision handphone for acceleration data