A pendulum swings at a rate of .65 vibrations/second. The period of the vibrations can be increased if:

Mass of the bob was increased

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Length of the pendulum was increased

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Mass of the bob was decreased

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Length of the pendulum was decreased

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Displacement from zero was increased

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Solution

The correct option is B Length of the pendulum was increased
$T = 2 π \sqrt{\frac{l}{g}} i s t h e t i m e p e r i o d o f t h e s i m p l e p e n d u l u m a n d i t d e p e n d s o n l e n g t h a n d g r a v i t y a n d i s i n d e p e n d e n t o f m a s s a n d d i s p l a c e m e n t o f t h e b o b . T o i n c r e a s e t h e t i m e p e r i o d w e h a v e t o i n c r e a s e t h e l e n g t h o f t h e p e n d u l u m a s p e r t h e e q u a t i o n .$

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