Question

the bob of a simple pendulum is made of ice. how will the period of oscillation change when the ice starts melting

Answer 1

==============
Hope this helps!
==============
The period of swing of simple pendulum will remain unchanged till the location of the centre of gravity of the bob left after melting the ice remains at a fixed distance from the point of suspension
If the centre of gravity of ice bob after melting is raised upwards, then the effective length of pendulum decreases and hence the time period of swing decreases. If the centre of gravity of ice shifts on lower side, the time period of swing increases.

Answer 2

Answer:

Effect on time period of swing:-)

The time period of Swing remains unchanged till melting of ice remains at a fixed distance from point of suspension .

it will start decreasing when the effective length of Pendulum decreases due to melting of ice .

and it will increase if Gravity of ice bob is shifted on lower side