Question

In simple pendulum experiment value of "g" is determined by g=4π²L/T².If percentage error in length is 4% and in time is 4% then percentage error in "g" is A)5% B)6% C)3% D)2%

Answer 1

Answer:

8%

Explanation:

Time period, T=2π

g

l

or g=

T

2

4π

2

l

The maximum percentage error

g

Δg

=

l

Δl

+2

∣

∣

∣

∣

∣

T

ΔT

∣

∣

∣

∣

∣

where

l

Δl

=2% and

T

ΔT

=3%

g

Δg

=2%+2×3%

=2%+6%=8%