Introduction to MechanicsWhat is Mechanics???Motion along an inclined planeEquations of dynamic motionEquations of kinematicsMeasuring the accelerationReferencesDynamics – May the ‘Force’ be with you!!!Introduction to MechanicsWhat is Mechanics???•Mechanics is the branch of physics concerned with the behavior of physical bodies when subjected to forces or displacements, and the subsequent effect of the bodies on their environment.•Applied mechanics is a branch of the physical sciences and the practical application of mechanics •Applied mechanics can be subdivided into statics, dynamics, fluid mechanics, deformation mechanics among others •Dynamics deals with the effects of forces on the motion of objectsMotion along an inclined planeEquations of dynamic motion• Normal Reaction N = mgCosΘ• Frictional force f = µN = µmgCosΘ• Resultant force F along the inclined plane is F = mgSinΘ - µmgCosΘ• Resultant acceleration is given by a = gSinΘ - µgCosΘEquations of kinematicsOn the Inclined plane• a = gSinΘ - µgCosΘ• Final velocity v = u + at (Assuming u = 0)• Displacement S = ut + (at^2)/2 where u = 0On the ground• F = 0, f = µN = µmg• Resultant force = F – f = -µmg• Resultant acceleration a = -µg• Final velocity v = u + at where v = 0 and a = -µg• Displacement S = ut + (at^2)/2 where a = -µgMeasuring the acceleration• A single-axis accelerometer• Determination of direction of sensing plane• Collecting the data• Determination of other parametersReferences•Wikipedia, the free online encyclopedia•http://www.physicsclassroom.comDynamics – May the ‘Force’ be with
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