A plane surface, incline at `37^(@)` to the horizontal is accelerated horizontally till a block of mass `m` originally at rest with respect to the plane, just starts to slip up the plane. The coefficient of static friction between surfaces in contact is `mu = (5)/(9)` Find the acceleratiobn of the plane
[Hint : Applying D' Alembert's principle bring the system to rest. Make free-body diagram adn apply second law of motion]

Answer

`a=(mu cos theta+sin theta)/(cos theta-mu sin theta)g=21.7 ms^(-2)`