Question

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

Answer 1

Answer:

Explanation:

The only resistance offered when you pull an object is friction ( neglect air drag).

It is given by f=μ (normal force)

The only normal force is weight. If g becomes twice, its weight(mg) becomes twice(2mg). As a result the normal force becomes twice. Which results in doubling the friction. Hence you need to put double effort to pull the object.

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Answer 2

Answer:

Explanation:

(i) If the value of g becomes double,the force with  which the earth pulls the object i.e weight of  object becomes double.

(ii) As weightincreases,frictional force also increases  while pulling the object

( iii) Hence, it will become two times more difficult to  pull a heavy object along the floor.