Physics P33 Practical Final Views

[aychdogg]

Hey guys theres a lot of confusion in the forums related to the practical P33... Please would someone give authentic information about what is actually coming tomorrow. I think the order doesn't matter as we should know all the errors related to any experiment. They are quite easy to learn and similar in many cases.

 

[filza94]

q.1 momemts of forces
q.2 oscillations

 

[abrraza]

explaination plz

 

[filza94]

hmm..

 

[Otaiba13]

how can u have both mechanics questions one question must be for mechanics and the other must be from electricity!!!

 

[filza94]

due to flactutions in pakistan no electricity experiment!!!

 

[filza94]

limitations and suggestions for moments:

-two readings not enough to draw conclusion
-difficult to balance WITH REASON (eg.g. unstable becoz of afans/draughts)
-difficult to judge when wooden strip horizontal/parallel(to bench)
-difficult of keeping x constant/weights move
-difficult to measure angle BECAUSE hard to judge vertical/movement of hand
-friction betwwn nail and strip
-mass (values) not accurate

suggestions
-take more readings AND plot a graph AND compare k values
-switch off fans/close windows
-METHOD of ensuring strip horizontal/parallel to bench (e.g. DETAILED use of set square)
-METHOD of fixing constant to rule(e.g. tape, glue)
-use clamped ruler/clamped protractor
-use lubricant/method of reducing friction
-use balance/method of weighing masses

these are a few for moments from past papers.. hope this helps!

 

[abrraza]

according to appratus any idea of calculating Uncertainity?

 

[filza94]

viewtopic.php?f=26&t=7224 check here!!!