1. calibrate force sensor and zero froce secsor.
Set up the equirement as showen.
2. zero reverse the dircetion on the motion sensor.
3. change the date collection to 30 pts/sec.
5. cart with extra mass.
Data collection:
Setetch the cart to position and click the "collect" button on the screen, then release the cart.
Data annlysis:
Add a new calculation coulumn named KE: =0.5*mass of the cart*"velocity"^2
take off all the data has a negative position value.
Intergate the force graph and find out the area of the force has the same value of the KE value.
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