Question: an ice cube starts from rest at point A = 4m and slides down a frictionless track. calculate speed of cube at B =2m ,

an ice cube starts from rest at point A = 4m and slides down a frictionless track. calculate speed of cube at B =2m , C=1m,D=2m,E3m use hint:If only conservative forces do work on an object, the total mechanical energy is conserved

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