## Monday, August 15, 2016

### sypt2016 workshop materials

I was honored to help +Leong Tze Kwang to make some Singapore Young Physicists’ Tournament (SYPT) workshop materials using Tracker.

### Theory

the equation for the drag force on the square paper is may be assumed to be is the form of $F = \frac{1}{2} \rho v^{2} C_{D} A$
where F is the aerodynamic drag force
$\rho$ is the is the density of the fluid
$v$ is the speed of the object relative to the fluid
$A$ is the cross sectional area
$C_{D}$  is the drag coefficient – a dimensionless number.

 Area, A/cm2 289 249 190 169 130 88 Terminal Velocity, v/ cm s-1 1.66 1.7 2.02 2.12 2.31 2.66

 cross sectional area A = 88 cm^2, Terminal velocity vT = 2.66 cm/s

 cross sectional area A = 130 cm^2, Terminal velocity vT = 2.31 cm/s

 cross sectional area A = 169 cm^2, Terminal velocity vT = 2.12 cm/s

 cross sectional area A = 190 cm^2, Terminal velocity vT = 2.02 cm/s

 cross sectional area A = 249 cm^2, Terminal velocity vT = 1.70 cm/s

 cross sectional area A = 289 cm^2, Terminal velocity vT = 1.66 cm/s