A2 practical: Masses and pulley support
I use a Pasco smart pulley connected to a science workshop 500 interface (still going strong).I used lumps of blutac for the masses which has the advantage of reducing the noise when they hit the table. Keeping the total mass constant simplifies the analysis. As mentioned previously friction is the biggest problem when the mass difference is small in fact the "no friction" version of the equation will give low values...