Question

answer and reason???

Answer 1

Correct option: (3)

As the ice melts, the mass from the poles will be distributed around the world. Due to this, the moment of inertia will increase and the angular momentum remains constant, hence, if the moment of inertia increase then the angular velocity will decrease and the length of the days will increase.

$I_1 \omega _1 = I_2 \omega_2$

$I_1<I_2$

Hence, $\omega_2 < \omega_1$

Hence, the angular velocity will decrease.