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- Please,please help me The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillati
The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would
- Option 1)
remain unchanged
- Option 2)
increase towards a saturation value
- Option 3)
first increase and then decrease to the original value
- Option 4)
First decrease and then increase to the original value
Answers (1)
As we learnt in
Time period of oscillation of simple pendulum -
- wherein
l = length of pendulum
g = acceleration due to gravity.
For a pendulum, where
Is measured upto centre of gravity. The centre of gravity of system is at centre of sphere when hole is plugged. When unplugged, water drains out. Centre of gravity goes on descending. When the bob becomes empty, centre of gravity is restored to centre.
Length of pendulum first increases, then decreases to original value.
T would first increase and then decrease to the original value.
Correct option is 3.
Option 1)
remain unchanged
This is an incorrect option.
Option 2)
increase towards a saturation value
This is an incorrect option.
Option 3)
first increase and then decrease to the original value
This is the correct option.
Option 4)
First decrease and then increase to the original value
This is an incorrect option.
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