Momo with mass m is sliding down an inclined plane that makes an angle O relative to the horizontal. The coefficient of kinetic friction between Momo and the inclined plane is pk. Obtain an expression for Momo's acceleration along the incline. Assign a rotated Cartesian plane so that the acceleration is along the positive x-axis and the normal force is along the positive y-axis. The component of the weight parallel to Momo's acceleration is wx = mg Ф. The magnitude of the frictional force is f = uK The normal force on Momo is n= mg With these expressions and applying Newton's second law, we arrive at an expression for Momo's acceleration: a = - Hk

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: