Question

Help please

Answer 1

1. Did the period of the pendulum swing depend on the mass of the bob? On the length of the string? On the displacement? How does your data relate to the pendulum equation? You need not include your data tables and graphs, but you should explain your answer based on the information in your data tables and graphs.

Answer 2

If you find this post too difficult to read, then please ignore it, and let me know.

my arithmetic may be out, but there seems to be a systematic discrepancy between theory and expt from 95.png and 99.png
It may help to draw some graphs out

I think that the equation for the natural period of oscillation of a simple "mass-bob and string" pendulum whose angular displacement is small is
T = 2 pi root (l/g)
T squared = 4 pi squared l/g
I also think that T should be independent of the mass of the bob.
**************
1
from 95.png it LOOKS as though there's an upward trend in period as mass increases.
**************
2 from 99.png
T squared = 4 pi squared l/g = 4 pi squared 0.2/9.8 = 0.8057 vs 0.78 ?
T squared = 4 pi squared l/g = 4 pi squared 0.3/9.8 = 1.2085 vs 1.04 ?

T squared = 4 pi squared l/g = 4 pi squared 0.5/9.8 = 2.0142 vs 1.47 ?
***************
It may help to draw some graphs out