Question

If the radius of the earth is reduced to half of its value what will be it's effect on duration of day

Answer 1

According to LCM

Iw=constnt

Mr^2w=constant

R^2w=constant

R^2 2¢f=constant. [¢refers to pie

R^2/T=constant. F is frequency and t is time period

Here radius os earth reduced to half so R^2/24=R^2/4T

T=24/4

=6 hours