Question

It takes 0.5 seconds for a pendulum Bob to move from mean position to one end. what is the frequency of pendulum?

Answer 1

Answer:

f requency = 1/ T = 1/0.5 = 2 hz

Answer 2

Answer:

If 'T' be the time period of simple pendulum,it will take time 4T to go extreme position from its mean position.So here

4T=0.5

⇒T=2s

Now the length ′l′ of simple pendulum related with time period 'T' as

T=2πgl⇒l=4π2T2g⇒l=0.99m≈1m

Here g=9.8s2mT=2s