if the earth shrinks to 50% of its real radius its mass remaining the same,the weight of a body on the earth will a) decreased by 50% b) increased by 50% c) deceased by 25% d) increased by 300% (give the answer for this question in step by step)

if the earth shrinks to 50% of its real radius its mass remaining the same,the weight of a body on the earth will a) decreased by 50% b) increased by 50% c) deceased by 25% d) increased by 300% (give the answer for this question in step by step)