Question

If earth shrinks to 50% of its real radius its mass remaining the same the weight of s body on the earth will

Answer 1

If acceleration due to gravity on earth(g) = G.M/R², then weight of the body = mg; where G is gravitation constant, M is mass of earth and R is the radius. Now if the radius is reduced by half it means g is reduces by 1/4th because it is inversely proportional to the square of radius.