What is the period of a pendulum if it's height is zero ?

1 Answer
Nam D.
Feb 27, 2018

I guess it won't have a period at all!

Explanation:

Well, the period of a pendulum, #T#, is given by:

#T=2pisqrt(l/g)#

According to this equation, it looks to me like the period is independent of height, so I assume that the length of the bob attached to the string is zero, i.e. #l=0#.

So, plugging into the equation #t=0#, we get

#T=2pisqrt(0/g)#

#T=2pisqrt(0)#

#T=2pi*0#

#T=0#

So, it won't have a period of oscillation.

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