The lenght of seconds pendulum at place where gravitational acceleration (g)is 9.8m/ per square second
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T=2π√l/g
here,
g=9.8
now, l=T^2(g)/4π^2
l= 2.45(T^2)/π^2
here,
g=9.8
now, l=T^2(g)/4π^2
l= 2.45(T^2)/π^2
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