M*0=F+mg*(sin(pi/6)-cos(pi/6)*mu)
m*a=F*cos(pi/6)+mg*sin(pi/6)-(mg*cos(pi/6)-F*sin(pi/6))*mu
**************
F/mg=cos(pi/6)*mu-sin(pi/6)
a=F*cos(pi/6)/m+g*sin(pi/6)-(g*cos(pi/6)-F*sin(pi/6)/m)*mu
*************
mu = (F/mg+sin(pi/6))/cos(pi/6)= (2/(1*9,81)+sin(pi/6))/cos(pi/6)=
0,812763
a=2*cos(pi/6)/1+9,81*sin(pi/6)-(9,81*cos(pi/6)-2*sin(pi/6)/1)*mu м/с^2=
0,544814 м/с^2 ~
0,55 м/с^2