Class 11 NEET Physics Laws of Motion Questions

The wedge is given an acceleration to the left.
∴ The block has a pseudo acceleration to the right, pressing against the wedge because of which the block is not moving.
∴mg‌sin‌θ=ma‌cos‌θ or a=

g‌sin‌θ

cos‌θ

Total reaction of the wedge on the block isN=mg‌cos‌θ+ma‌sin‌θ
or N=mg‌cos‌θ +

mg‌sin‌θ.sin‌θ

cos‌θ

or N=

mg(cos2θ+sin2θ)

cos‌θ

=

mg

cos‌θ