Ohhh. Thanks Syndicate. I only just saw this.
For that inclined plane experiment with the cart rolling down the plane, is there any way we can account for friction? Is there any way to figure out the amount of friction acting?
Generally, most of the motion formulas used in VCE Physics tend to ignore friction. I don't think you can calculate friction, as there isn't enough information given, however, you can say that the friction was not 'stronger' than the trolley car's acceleration, as it was able to move (whereas, if it wasn't able to move, then it would have meant that friction was stronger than the force applied to the trolley car). So yeah... you shouldn't really worry about it.
For a pendulum EPI.
say your variable was angles . What formulas could you use to work out the angles?
I am not quite sure about the formula, however, I did a little research and found this great website (it has some good information)-
https://www.boundless.com/physics/textbooks/boundless-physics-textbook/waves-and-vibrations-15/periodic-motion-123/the-simple-pendulum-431-8324/hopefully others will be able to help you here
Also what would be some other good variables to investigate relating to the pendulum EPI ?
- length of the pendullum (does it increases/decreases it's velocity?)-
l (length variable)
- mass of bob (again, what effects does it have on the velocity)-
m (mass of bob)