Physics-
General
Easy

Question

A particle moves in the x-y plane according to the equation,blank stack r with rightwards arrow on top equals open parentheses stack i with tilde on top plus 2 stack j with tilde on top close parentheses A cos invisible function application omega t. The motion of the particle is-

  1. on a straight line    
  2. on an ellipse    
  3. periodic    
  4. simple harmonic    

The correct answer is: periodic

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