System Composition of llongwill^® Multi-purpose Mechanical Track:A. Track, B. Carts (red, yellow), C. Fixed Leg, D. I-type Bracket (Aluminum), E. I-type Bracket (Plastic) , F. L-type Bracket, G. Friction Block, H. Track Inclination Adjuster, I. Magnetic End Stop, J. Pulley, K. Magnetic Sheet, L. 50g Weight Block, M. 5g Weight Block, N. Light Blocking Sheet in width of 20,40,60,80mm O. Springs,P. Fasteners, Q. T type Track Support, R. Elastic Metal Ring, S. Kibble with String,T. Cart Absorber.

Components of llongwill^® Centripetal Force Apparatus: A. Main Frame, B. Base, C. Rotating Arm, D. Connecting Device (a bolt connected with the force sensor, a vertical rod and a horizontal rod), E. Weight , F. Light Blocking Rod, G. Fasten bolt: a bolt connected with the force sensor. 

Components: 

Precision Force Disc,  Hanging arm, Force Sensor Fixed Rod, Roller , Standard Block, Weight, Stand support .

Intelligent apparatus used with Force&Angle Sensor.

Real time obtain the angle data automatically, instead of manual input operation