Question in number 2:  2.)A loaded box weighing 800N is pulled along the level floor with constant velocity by means of a rope which is parallel to the floor. If the coefficient of friction is 0.14, what is the tension in the rope?  Question in number 3:  3.)If the rope in no. 2 forms an angle of 30° with the floor, what is the tension in the rope?

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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: