Assertion: turntable's tonearm | /r/CapableOf | track the groove
Facets:
Source sentences:
text: As the tonearm tracks the groove, the stylus exerts a frictional force tangent to the arc of the groove, and since this force does not intersect the tone arm pivot, a clockwise rotational force (moment) occurs and a reaction skating force is exerted on the stylus by the record groove wall away from center of the disc.