FORCE AND FRICTION

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Across
  1. 4. balance:device in which an object to be weighed is attached to the end of a helical spring.
  2. 5. force:the attraction or repulsion of different particles and materials based on their electrical charges.
  3. 6. friction:that occurs when an object rolls over a surface.
Down
  1. 1. force:that attracts everything towards itself.
  2. 2. force:the attraction or repulsion that arises between electrically charged paticles because of their motion.
  3. 3. bearing:a bearing in which the parts are separated by a ring of small freely rotating metal balls which reduce friction.