Answer:
Explanation:
Given
length of Pendulum [tex]L=80\ cm[/tex]
Time period of simple pendulum is given by
[tex]T=2\pi \sqrt{\frac{L}{g}}[/tex]
where L=length of pendulum
g=acceleration due to gravity
For [tex]L=80\ cm[/tex]
[tex]T=2\pi \sqrt{\frac{0.8}{9.8}}[/tex]
[tex]T=2\pi \times 0.6058[/tex]
[tex]T=3.80\ s[/tex]
(b)In a freely falling elevator
effective gravity will be [tex]g_{eff}=g-g=0[/tex]
Therefore time period will become infinite
