Recently, I have read a old book with an article about two kids arguing the problem of Sun.
One day, Confucius heard two kids arguing on the road.
One said "in the morning, the sun rises, it is closer to the ground and look as big as a roof of the carriage. In the afternoon , the sun is far...
hay~I got it. I know what wrong I did. Actually, my result is very accurate.
thank you very much. I think my report is the best in my class. I have make a silly mistake a whole day! thanks for your support. I can make a good dream now. The y-intercept is 0.0944 not 1.3. sorry to let you worry.
the experiment I did is by my own hands
but, it is fine. I give up now. I should change the data to fit it
Thx for your help, it wasted you so much time
anyway, thank you.
if the ruler reading switched, all the length measured are also switched. By the equation, T square=4πsqure(L/g), if L get greater, the graph will switch upward.
if the air resistance exist, the period will get larger, by T=2πroot(L/g),the graph will also switch upward.