question_answer

  Suppose the mass of the earth some how increases by 10% without any change in its size. What would happen to your weight? Suppose the radius of the earth becomes twice of its present radius without any change in its mass, what will happen to your weight?

Answer:

                  (i) Original weight  where M is the mass of the earth. When M changes to new mass M then, new mass, M =M+ 10% of At New weight Now, (1) New weight becomes 1.1 times. i.e., weight will increase by 10%. (ii) Weight when r is the radius of the earth. When r changes to 2r, the new weight is given by New weight= New weight becomes 4 times.