Question

1) _ _ _ _ position is the position of the bob when the freely suspended pendulum is at rest.
2) _ _ _ _ _ _ _ _ _ is a rapid to-and-fro or up and down movement about the mean position.

Answer 1

Answer:

1)Mean position

2)Oscillations

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Answer 2

1). Mean position is the position of the Bob when the freely suspended Pendulum is at rest.

2). Vibration is a rapid to-and-fro or up and down movement about the mean position.