Question
A particle is in linear simple harmonic motion between two points A and B, 10cm apart. Take the direction from A to B as positive direction and give the signs of velocity and acceleration on the particle when it is:
  1. At the end B.
  2. At 3cm away from A going towards B.

Answer



  1. At the end B velocity is zero. Here acceleration and force are negative as they are directed along BR i.e., along negative direction.
  2. At 3cm away from A going towards B, the particle is at R, with a tendency to move along RP which is positive direction, here velocity, acceleration are all positive.

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