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A large box, placed on the ground, has t...

A large box, placed on the ground, has to be shifted up to a wall, as shown in the given figure. Three boys push the box together. They have to apply a large amount of force to move the box. The motion of the box is opposed by the frictional force between the box and ground.

If wheels were present below the box, then they would have to apply

A

More force

B

Same force

C

Less force

D

No force

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