Question

It takes 0.4 s for a pendulum bob to move from one extreme position to another extreme position. What is the time period of the pendulum?
{i need the answer fast}

Answer 1

Answer:

Explanation:

If 'T' be the time period of simple pendulum,it will take time  

4

T

​  

 to go extreme position from its mean position.So here

4

T

​  

=0.5

⇒T=2s

Now the length  

′

l  

′

 of simple pendulum related with time period 'T' as

T=2π  

g

l

​  

 

​  

 

⇒l=  

4π  

2

 

T  

2

g

​  

 

⇒l=0.99m≈1m

Here g=9.8  

s  

2

 

m

​  

 

T=2s

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