- #1
timetraveller123
- 621
- 45
i was watching a video of physics of table tennis
and got interested to work it out for myself
forces to be considered
quadratic drag force
magnus force
gravity
m : mass of the ball
v : velocity of the ball
w : angular velocity of the ball(assuming for simplicity not changing during the fllight)
r : radius of the ball
##\rho## : density of air
g : gravitational acceleration
A cross sectional area of ball force on the ball
##
-mg \hat j\\
\frac{c_d A \rho v^2}{2}\text {opposite to direction of velocity }\\
\frac{1}{2}{c_m \rho A v^2 \hat w \times \hat v}\\
##
through out the flight the direction of magnus force and drag force are constantly changing and that is giving me some trouble setting up the f = ma differential equation
i plan to break the forces down into their vertical and horizontal forces and set up two differential equation to get y(t) and x(t) can it be done please help thanks
and got interested to work it out for myself
forces to be considered
quadratic drag force
magnus force
gravity
m : mass of the ball
v : velocity of the ball
w : angular velocity of the ball(assuming for simplicity not changing during the fllight)
r : radius of the ball
##\rho## : density of air
g : gravitational acceleration
A cross sectional area of ball force on the ball
##
-mg \hat j\\
\frac{c_d A \rho v^2}{2}\text {opposite to direction of velocity }\\
\frac{1}{2}{c_m \rho A v^2 \hat w \times \hat v}\\
##
through out the flight the direction of magnus force and drag force are constantly changing and that is giving me some trouble setting up the f = ma differential equation
i plan to break the forces down into their vertical and horizontal forces and set up two differential equation to get y(t) and x(t) can it be done please help thanks