Question

value a of'g' suddenly becomes twice its value it will become 2 times more difficult to pull a heavy obj. along the floor explain why?

Answer 1

We know that,

Weight ∝ Mass

also,

Weight ∝ g

and

Force ∝  mass [by second law of motion]

Force ∝ Weight [from relation 1]

Force ∝ g [from relation 1] [without loss of generality]

hence if g become twice then force will also be double and it will be more difficult to move that object

Hope this scientific explanation helped you