7.
Find the length of a seconds' pendulum at a place
where g = 10 m s-2 (Take n = 3.14).
Ans. 1.0142 m
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Answer: T= 2π√l/g
2= 2π√l/g
l= g/π^2
=10/3.14^2
= 1.01
Explanation:
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