Question

What will be change in Time period of a Simple Pendulum if Material of Bob was changed from Lead to Pure Copper? assume T with Lead Bob was 27 sec and ratio of densities of Lead to Copper is 2!​

Answer 1

Tαl time period depends only on effective length.

Density has no effect on time period if length made 4 times period becomes 2 times.

Answer 2

No Change as far as I know.

The time period depends upon length of pendulum and acceleration due to gravity, which ofcourse remains same as I'm certain you're from earth.

Hope it helps. Pardon me if I'm wrong.

:U