one of my ideas to help all ofus on the exam specially edexcel folks

how about making a thread to include all of these experiments like the planning experiments required by edexcel resonance,SHM ,springs pendulums stationary waves...etc so that we can manage to get these 7 marks in each papers,now anybody has an experiment ost it here,I have some but I will write them down as soon as I feel better ,,anyways so post any experiment you want make sure
to have a diagram of the procedure,drow it using paint asimple one will do
2- apperatus
3-procedure(sp?)
4-calculations
5-precautions