# Change in earth's day length due to water displacement

by karnten07
Tags: displacement, earth, length, solved, water
 Mentor P: 15,170 Use conservation of angular momentum: $I_-\omega_- = I_+\omega_+$, where the - and + subscripts denote the before reservoirs scenario and after reservoirs scenario. The rotation period is related to the angular velocity via $T=2\pi/\omega$.
 Quote by D H Use conservation of angular momentum: $I_-\omega_- = I_+\omega_+$, where the - and + subscripts denote the before reservoirs scenario and after reservoirs scenario. The rotation period is related to the angular velocity via $T=2\pi/\omega$.