Solution:
Time period does not depend on density of bob.
A given pendulum has a spherical solid bob of aluminium.Its period is I sec. Now this bob is replaced by a spherical solid bob of the same diameter but made of iron. Density of aluminium is 2.7 g/cc and that of iron is 9.8 g/cc. The period of oscillation of the pendulum will now be:
A given pendulum has a spherical solid bob of aluminium.Its period is I sec. Now this bob is replaced by a spherical solid bob of the same diameter but made of iron. Density of aluminium is 2.7 g/cc and that of iron is 9.8 g/cc. The period of oscillation of the pendulum will now be:
