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engineeringsciencejournal bearingrollingcollarjackscrewnewtonlawskineticstaticenggforce of frictionmechanicalbtechtypetype of frictionforcefrictionuniversitycase studytechinformation technologytechnologyintroductionmaterialstrengh of materialsomdefinestrain energy formulasmstrain energyengg.mechanicsolid mechanicenergystrainball