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为了研究物体的运动而假定不动的那个物体,叫做参照物(或称之为参照系)。同一物体的运动,对于不同的参照系,其运动的描述不相同。 一、参照系的分类 中学阶段,参照系主要指惯性系,但或多或少地要接触到非惯性系或质心系的问题。 1.惯性参照系 《必修本》的叙述为:在研究地面上物体的运动时,为了研究问题的方便,常取地球作参照物,即惯性参照系。在研究地面上物体的运动时,相对地面做匀速直线运动或静止的参照物,也是惯性参照系,物体在各个惯
The object that is assumed to be immobile in order to study the motion of an object is called a reference object (or referred to as a reference frame). The movement of the same object does not have the same description of movement for different frames of reference. First, the classification of the reference system In the middle school stage, the reference system mainly refers to the inertial system, but more or less to contact non-inertial or mass center system problems. 1. Inertial Reference System The “Compulsory Book” states that when studying the movement of objects on the ground, in order to study the convenience of the problem, we often use the earth as a reference object, ie, an inertial frame of reference. When studying the motion of an object on the ground, a uniform linear motion or a stationary reference relative to the ground is also an inertial frame of reference.