A block of mass m is placed on a smooth wedge of inclination θ. The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block has a magnitude
Since the system is accelerated horizontally such that the block does not slip on the wedge.
Therefore, F= ma component resolved into 
and 
From the figure we have
_______________ {1}
_______________ {2}
From, {1} and {2}
The force exerted by the wedge
on the block has a magnitude
1