Question 143: Oscillations

Question

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

Accepted Answer

Center of mass of combination of liquid and hollow portion (at position $$\ell $$ ), first goes down (to $$\ell  + \Delta \ell $$) and when total water is drained out, center of mass regain its original position (to $$\ell $$), 
$$$T = 2\pi \sqrt {{\ell  \over g}} $$$
$$	herefore$$ $$'T'$$ first increases and then decreases to original value.

Answer

first decrease and then increase to the original value

Answer

first increase and then decrease to the original value

Answer

increase towards a saturation value

Answer

remain unchanged

Oscillations

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

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