Question

If the Earth shrinks to 50% of its real radius its mass remaining the
same, the weight of a body on the Earth will XX
a decrease by 50%
b. increase by 50%
decrease by 25%
d. increase by 300%
​

Answer 1

Answer:

d. increase by 300%

Explanation:

g=GM/R2

now r decreases by 50 percent

g'=GMm/(R/2)2

on solving

g'=4g

which is 300 percent increase

as

(g'-g/g)×100=300