1. The problem statement, all variables and given/known data A smooth inclined plane with inclination [tex]\theta[/tex] is fixed in a car accelerating on a horizontal surface with a=gtan([tex]\theta[/tex]).A sphere is set pure rolling on this incline. Will it continue pure rolling? 3. The attempt at a solution My idea is to find the linear acceleration of the sphere using Newton's laws along the incline. Then I find the angular acceleration equating Torque exerted by friction to the product of Moment of Inertia of the sphere and its angular acceleration.Knowing the angular acceleration,I find the linear acceleration by multiplying it with radius of the bob. If the two accelerations are the same,then it is pure rolling. Am I right? When I did it this way,I found that it will not roll purely.