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In a certain observation of experiment with simple pendulum we get $l = 23.2 cm$ , $r = 1.32 cm$ and time taken for 20 oscillations was $20.0 s e c$ . Taking $π^{2} = 10$ , find the value of g in proper significant figures.

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4.80 m/s2

9.60 m/s2

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9.80 m/s2

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detailed solution

Correct option is D

Equivalent length of pendulum,L=23.2 cm+1.32 cm=24.52 cm=24.5 cm (according to addition rule of significant figures)Time period, T=20.020=1.00 s. Time period has 3 significant figuresg=4π2lT2=4×10×24.5×10-2(1.00)2=9.80 m/s2

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In a certain observation of experiment with simple pendulum we get l=23.2 cm, r=1.32 cm and time taken for 20 oscillations was 20.0 sec. Taking π2=10, find the value of g in proper significant figures.

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

In a certain observation of experiment with simple pendulum we get $l = 23.2 cm$ , $r = 1.32 cm$ and time taken for 20 oscillations was $20.0 s e c$ . Taking $π^{2} = 10$ , find the value of g in proper significant figures.