
Q.A particle moves from rest at A on the surface of a smooth cylinder of radius r as shown.At B it leaves the cylinder.The equation relating alpha and beta is
a.)3sin(alpha)=2cos(beta)
b.)2sin(alpha)=3cos(beta)
c.) 3sin(beta)=2cos(alpha)
d.)2sin(beta)=3cos(alpha)
please help.










