Question

If the earth suddenly shrinks (without changing mass) to half of its present radius, the acceleration due to gravity will be

• A. g/2
• B. 4g
• C. g/4
• D. 2g

Answer 1

Answer: (B)

4g

Answer 2

$g = \frac { G M } { R ^ { 2 } }$ If radius shrinks to half of its present value then g will becomes four times.