![]() ![]() Newton’s Third Law states that if a body A exerts a force on body B, then body B exerts a force of the same magnitude but in the opposite direction of body A. Newton’s Second Law states that net force is directly proportional to acceleration and to mass. Newton’s First Law (Law of Inertia) states that a body remains at rest or travels with constant speed along a straight line unless acted upon by an external force. Elevator moving upwards at constant velocity.This means the body is either at rest or travels at constant velocity. Combine the sum of horizontal components and the sum of vertical componentsĪ body is said to be in translational equilibrium if it the net force acting on the body is zero. Resolve all acting forces into horizontal and vertical componentsĤ. The length and direction of the arrows corresponds to the magnitude and the direction of the forces acting on the body of interest.ĭetermining the resultant force 1. #Workdone under graph freeOn a free body diagram, forces acting on an object are represented as arrows which stem from a point mass. Objects are represented as a point mass to enable the representation for forces as arrows in free-body diagrams.
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