A small disc P is placed on an inclined plane forming an angle theta with the horizontal and imparted an initial velocity v_(0). Find how the velocity of disc depends on the angle phi which its velocity vector makes with the x axis (see figure). The coefficient of friction is mu= "tan" theta and initially phi_(0) = (pi)/(2)

A small disc P is placed on an inclined plane forming an angle theta w

1.	A small disc P is placed on an inclined plane forming an angle theta with the horizontal and imparted an initial velocity v_(0). Find how the velocity of disc depends on the angle phi which its velocity vector makes with the x axis (see figure). The coefficient of friction is mu= "tan" theta and initially phi_(0) = (pi)/(2)
Answer» ANSWER :`(v_(0))/(1 + "COS"PHI)`