How to Calculate friction in a body without acceleration

This video shows the viewer how to calculate friction in a body that it is not accelerating. The simple answer is that the force of friction will be equal to the force needed to maintain the constant speed. This means that is you pull a wooden block along a carpet at a constant speed and a Newton meter between you and the block measures 5 Newton's then the force of friction between the carpet and the block is exactly 5 Newton's. If the object is accelerating then this rule does not apply.For more information and an instructional demonstration please see the video.