A cannon is fixed with a smooth massive trolley car at an angle `theta` as shown in the figure. The trolley te trolley car slides from rest down the inclined plane of inclimation `beta`.
The muzzle velocity of the shell fired at `t=t_(0)` from the cannon is u, such that the shell moves perpendicu lar to the inclined plane just after the firing.

The value of `r_(0)` is:

Options

A. `(ucos theta)/(g)`
B. `(u cos theta)/(g cos beta)`
C. `(u cos theta)/(g sin beta)`
D. `(u sin theta)/(g cos beta)`

Answer

c