Question

Two pendulums a and b each have a length of two meters . the bob of pendulum a weighs 20 grams and that of b 22grams. which pendulam will have greater time period?

Answer 1

both pendulum will have same period . by low of mass, period of pendulum is independent  on mass  of bob . and both pendulum will have same length so both have same period .

Answer 2

if both pendulum a and b have different mass it does not depend on the mass it only depend on the length of the wire used so,the a and b have same time period.