IF THE POLAR ICE CAPS OF THE EARTH WERE TO MELT
- · If the polar ice caps of the earth were to melt, what would the effect of the length of the day be?
Answer: Earth rotates
about its polar axis. When ice of polar caps of earth melts, mass concentrated
near the axis of rotation spreads out. Therefore, moment of inertia I increase.
As no
external torque acts, angular momentum constant. i.e L = Iω = I(2π/T)
With increase of
I, T will increase i.e. length of the day will increase.
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