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?

Answer 1

Answer:

The bob takes 0.5 sec to move from mean position to an extreme end which is equal to

4

1

th of its time period.

so,T=2 s

Again if l is the length of bob

T=2π

g

l

⇒l=

4π

2

T

2

g

=

4×π

2

4×9.8

=1.008m

Explanation:

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