Abstract: For the lack of experiment of the present ＂ centripetal force demonstrator＂, we improve the quantitative analysis show of the centripetal force of the electric instrument. The new instrument retains the centripetal force demonstrator part of the electric components, measures and improves the turning radius of the centripetal force measuring device. By changing the motor speed, the radius of circular motion, balls and other quality parameters of the device can be studied qualitatively and quantitatively.

Key words: centripetal force, quantitative analysis, demo equipment