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Q.

What is the fractional error in g calculated from T=2πl/g? Given fractional errors in T and l are ± x and ± y respectively.

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a

x+y

b

x−y

c

2x−y

d

2x+y

answer is C.

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Detailed Solution

∆TT= ∆g2g+∆l2l x+y2= z2 z=2x+y for maximum possible error.

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What is the fractional error in g calculated from T=2πl/g? Given fractional errors in T and l are ± x and ± y respectively.