Question 163: Units , Dimensions and Error Analysis

Question

If the length of the pendulum in pendulum clock increases by 0.1%, then the error in time per day is :

Accepted Answer

$T = 2\pi \sqrt {{l \over g}} $
${{\Delta T} \over T} = {1 \over 2}{{\Delta l} \over l}$
$\Delta T = {1 \over 2} 	imes {{0.1} \over {100}} 	imes 24 	imes 3600$
$\Delta T = 43.2$

Answer

86.4 s

Answer

4.32 s

Answer

43.2 s

Answer

8.64 s

Units , Dimensions and Error Analysis

If the length of the pendulum in pendulum clock increases by 0.1%, then the error in time per day is :

Choose the correct answer: