SHMHard
Question
The bob of a single pendulum is a spherical hollow ball filled with water. A piugged hole near the bottom of the oscillating bob geys suddenly unolugged. During observation, till water is coming out, the time period of oscillation would
Options
A.first decrease and then increase to the original value
B.first increase and then decrease to the original value
C.increase towerds a satugration value
D.remain unchanged
Solution
Centre of mass of combination of liquid and hollow portion (at position l), first goes down (to l = ᐃl)and when total water is drained out, centre of mass regain its original position (to l),
T = 2π
∴ ′T′ first increse and then decrease to original value.
T = 2π
∴ ′T′ first increse and then decrease to original value.
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