Work Power and Energy 4 Question 3

4. A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum, its acceleration vector a is correctly shown in

(2002, 2M) (a)

(c)

(b)

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Answer:

Correct Answer: 4. (c)

Solution:

  1. Net acceleration a of the bob in position B has two components.

(a) an= radial acceleration (towards BA )

(b) at= tangential acceleration (perpendicular to BA )

Therefore, direction of a is correctly shown in option (c).



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