Block A rests on inclined surface of wedge B which rests on a horizontal surface. The block A is connected to a string, which passes over a pulley P (fixed rigidly to the wedge B) and its other end is securely fixed to a wall at Q. Segment PQ of the string is horizontal and Q is at a large distance from P. The system is let go from rest and the wedge slides to right as A moves on its inclined face. Find the distance travelled by A by the time it reaches the bottom of the inclined surface.

Answer

`10 sin 15^(@)`