Book Review If you need to adding benefit, a must buy book. Engineering Mechanics: Statics and Dynamics, 4th ed. PDF Engineering Mechanics: Statics and Dynamics, 4th ed.
(independent on point of application)Internal Force produces stress and deformation in the body. Engineering Mechanics Statics - Meriam and Kraige (.Dynamics considers the motion of rigid bodies caused by the forces acting upon themKinematics deals with pure motion of rigid bodiesKinetics relates the motion to applied forcesLength used to locate the position of a point in space and thereby describe the size of a physical systemTime is conceived as a succession of eventsMass is a measure of the quantity of matter that is used to compare the action of one body with that of another.Force a push or pull exerted by one body to another External Force - changes, or tends to change, the stateOf motion of a body. Hibbeler ,PDF Engineering Mechanics: Statics & Dynamics (14thStatics considers the effects and distribution of forces on rigid bodies which are and remain at restGE202 Dynamics (Required Course) - Imam U - Engineering Mechanics Dynamics, Meriam, and Kraige. Hibbeler ,Reading Book Engineering Mechanics: Statics & Dynamics (14th Edition) By Russell C.
The mutual forces of action and reaction between two particles are equal, opposite, and collinearF = force of gravitation between the two particlesG = universal constant of gravitation according toExperimental evidence, G = 66.73(10-12) m3/(kg s2)m1, m2 = mass of each of the two particlesr = distance between the two particlesCGS: dyne = (g)(cm/s2) MKS: N = (kg)(m/s2) US: lbf = (slug)(ft/s2)Kgf = (kgm)(9.8 m/s2) lbf = (lbm)(32.174 ft/sKgf = kgm lbf = lbmFor Non-Standard ConditionForce System any arrangement when two or more forces act on a body or on a group of related bodies.Coplanar the lines of action of all the forces lie in one planeConcurrent the lines of action pass through a common pointParallel the lines of actions are parallelNon-Concurrent the lines of action are neither parallel nor intersect at a common point1. A particle acted upon by an unbalanced force experiences an acceleration a that has the same direction as the force and a magnitude that is directly proportional to the force.Third Law. A particle originally at rest, or moving in a straight line with constant velocity, tends to remain in this state provided the particle is not subjected to an unbalanced force.Second Law (Law of Acceleration). We can represent a load by aconcentrated force, provided the area overwhich the load is applied is very smallcompared to the overall size of the body.First Law (Law of Inertia).
The sense of the vector willchange if the scalar is negative.As a special case, if the vectors arecollinear, the resultant is formed by analgebraic or scalar addition.Resultant of Three or More Concurrent ForcesResultant simplest system that can replace the original system without changing the effect on a rigid bodyDetermine the magnitude and direction ofthe resultant of the three forces shown.Determine also the horizontal and verticalcomponent of the resultant.Determine the magnitude and direction of Rif P1 and P2 are 100 lb and 150 lb respectively.P2 lies horizontally while P1 makes 120 withthe horizontal.Determine the magnitude of R if P1 and P2are 100 lb and 150 lb respectively. Action and reaction forces are equalbut oppositely directed.Scalars quantities which possesmagnitude only and can be addedarithmetically.Vectors quantities which possesmagnitude and direction and can becombined only by geometric (vector)addition.Multiplication or division of a vector bya scalar will change the magnitude ofthe vector. A set of forces in equilibrium may beadded to any system of forces withoutchanging the effect of the originalsystem4. The forces are in equilibrium only whenequal in magnitude, opposite indirection, and collinear in action.3.
In whatdirection should the boat head if it is to reach a pointon the other side of the river directly opposite itsstarting point?Moment is the measure of the ability of a force to produce turning or twisting about an axis.= where d is the moment arm (perpendicular distance from the axis at point O to the line of action of the force.The Principle of Moments (Varignons Theorem)The moment of a force is equal to the sum of the moments of its components.
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