Problem No. 1 A 270 lb block is in contact with a plane inclined at 30 deg to the horizontal. A force P, acting horizontally as shown is applied to the body. If the coefficient of static friction is 0.2: a) find the value of P to just cause motion to impend up the plane; b) find P to just prevent motion down the plane; c) If P = 110 lb, determine the magnitude and direction of the frictional force. %3D Draw the free body diagrams. 300 30°

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Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.