Abstract
This chapter focuses on balancing rotating masses. For a system of rotating masses to be balanced, two the following conditions must be satisfied: (1) with the system mounted on frictionless bearings, it must remain in equilibrium about its axis in any position through one revolution—this condition is known as static balance; (2) when the system is rotating, there must be no increase in the reaction at the bearings because of centripetal force—this condition is known as dynamic balance. The chapter also discusses dynamic reactions at bearings because of out-of-balance forces. To find the dynamic reactions at the bearings in a rotating system of out-of-balance masses, the bearings are assumed to be planes in which masses must be placed to achieve perfect balance.
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