Consider a book of mass 10 kg on a frictionless incline that makes an angle of 40? with the horizontal. Use a coordinate system in which +x is down the inclined surface and +y is perpendicular to and away from the inclined surface.
A) Find the components of the gravitational force acting on the book.
B) Find the normal force exerted on the book by the incline.
C) Find the acceleration of the book down the incline.