A satellite launched into a circular orbit of radius ‘R’ around the earth while a second satellite is launched into an orbit of radius 1.06R . The percentage change in the time periods of the two satellite is

T2T1=(R2R1)3/2=(1+0.061)3/2      ΔTT×100=32ΔRR×100 T2T1−1=(1+0.09)−1                     =32×1.06R−RR×100100×ΔTT=9                                      =32×0.06×100                                                                     =9%