Question

answer fast please ​

Answer 1

Answer:

given that dl/l*100=2%

now t =2π√l/g

log t=log2π\√g+1/2logl

1/t.dt/dl=1/2l

dt/t=1/2.dl/l

dt/t*100=1/2.dl/l*100

1/2*2%=1%