Question

if the value of g suddenly becomes twice its value it will become 2 times more difficult to pull a heavy object along the floor. Why?

Answer 1

if the value of g becomes double, our body will be under a great deal of stress and could be fatal if you were exposed to it for a protracted period.

Your muscles would struggle with even small movements. However, one of the most dangerous effects would be on your heart. Stronger gravity would cause blood to pool in your extremities, making your heart work extra hard to keep the blood pumping around your body.

Answer 2

If g, the acceleration due to gravity, is suddenly twice it’s value, yes, it would double the pull of an object on the floor. We commonly refer to this pull as weight.

Weight is the force of gravity on a mass. Newton's second law formula (F = m•a) shows the relationship between mass, acceleration and force. The weight formula uses Newton's second law: