Question

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

Answer 1

for lifting a body of mass m above the ground the applied force should be greater than mg. if the g is doubled then you need to apply twice the amount of force from the first case

as the force applied in the second case. will be 2mg

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Answer 2

Hey!

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We know that 'g' is acceleration due to gravity, if value of 'g' becomes twice, it will obviously be difficult to pull a heavy object along the floor.

We know,

F = mg

If g becomes 2g

Then,

We will have to apply greater force, twice the earlier force in order to move the object. And it's obviously tiring to apply much stronger and greater force , so if will be difficult.


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Hope it helps...!!!