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The string of a pendulum is horizontal. Mass of the bob is m. Now the string is released, what is the tension in the string at lowest position

The string of a pendulum is horizontal. Mass of the bob is m. Now the string is released, what is the tension in the string at lowest position

Grade:upto college level

1 Answers

Prajwal kr
49 Points
8 years ago

If string length is L,

 

Conserving energy, velocity at lowest point is (2gL)1/2

 

Centripetal  force mv2/L

= 2mg.

 

T- mg= mv2/L

T= 3mg

 

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