Question

time period of second pendulum if length is dobuled

Answer 1

hope this helped you

Answer 2

we know that:
T= 2π√(l/g)
where T=time period
l= length of pendulum
g=acceleration due to gravity
if we double the radius .then new time period will be
T''= 2π√(2l/g)
T''=√2×2π√(l/g)
T''=√2×T
T''= 1.414×T
so time period will increase