H2P-195

Combining uncertainties

H2 Physics · JC 1 · Medium · Combining uncertainties

The period

T

of a simple pendulum is given by

T = 2\pi \sqrt{l/g}

. A student uses this to calculate

g

. The uncertainties in

T

and

l

are

+\Delta T

and

+\Delta l

. What is the fractional uncertainty in

g

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