A block of mass m is placed on a smooth wedge of incination `theta`. The whole system s acelerated horizontally so tht the block does not slip on the wedge. The force exerted by the wedge on the block has a magnitude

Explanation

(i) For an observer on the ground :

`R sin theta=ma, R cos theta=mg`
`rArr a=g tan theta`
ii) `F=(M+m)a=(M+m)g tan theta`
iii) Force exerted by the wedge on the block
`rArr" "R=(mg)/(cos theta) or R= mg sec theta`