Question

If mass of earth decreases by 25% and its radius increases by 50% then acceleration due to gravity at its surface decreases by nearly

Answer 1

Hope it's helpful. See the attached file below

Answer 2

Answer:67%

Explanation:Dear Student,

g=GMR2Mass of earth decrease by 25%, remaining=75% of M=75100Mradius of earth increase by 50%, new radius=150% of R=150100Rg'=G(75100M)(150R100)2g'=GMR2[75100×10000150×150] g'=g515g'=0.33gAcceleration due to gravity decreases by=g−0.33g=0.67gAcceleration due to gravity decreases by=0.67×100%=67%