pls. explain

Asked by pcoolboy | 21st Dec, 2009, 07:57: PM

Expert Answer:

We'll assume that initial position A means the bob is at rest and the farthest left position is when the bob is horizontal.

Then the displacement is equal to the string length i.e. 1 m.

Work done = force x displacement

= mg x 1m

= 10 J





Answered by  | 21st Dec, 2009, 10:22: PM

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