In Figure 10.13 the shadow moves in simple harmonic motion. Where on the path of the shadow is the acceleration equal to zero?
Chapter2:OneDimensionalKinematics Kinematic–thedescriptionofmotion,withoutconcernforthecauseof themotion Onedimensionalmotionismotionalongastraightline. Inordertodefinewheresomethingisyoucancheckthepositionofan objectagainsttherulerandnotethereading.Thezerooftheruleristhe pointoforigin.Wehavetherighttochoosewhich directionispositiveand whichdirectionisnegativerelativetotheorigin.Thisiscallorientation.The combinationoforientationandoriginiscalledcoordinatesystem. Asanobjectchangespositionwesaythatitisundergoingtranslation.The amountitmovesisthedisplacement(D).displacementinvolvesdistance anddirection.Inonedimensionthedirectionispositiveornegative. *delta(Δ)ind