Analysis Of Object’s Motion In The Absence Of Friction Force

Every moving object obeys the laws of Newton on motion. We will discuss several examples of object motion in daily lives. In this discussion, the friction force that affects object’s movement is neglected.

- An Object Moving on A Flat Plane

An object on a flat plane is given a horizontal force so that its acceleration become.

a = F / m

- An Object Moving on An Inclined Plane

A Block is moving on an inclined plane. Base on the Newton’s second law, the acceleration of the block (c) can be determined by the following equations.

∑F = ma ,  w sin ϴ = ma , mg sin ϴ = ma

Thus the magnitude of the object acceleration on an inclined plane with angle ϴ is

a = g sin ϴ

where g is the gravitational acceleration.