# A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be$(g=10\, \, ms^{-2})$ Option 1) 6 ×103 J Option 2) 6 J Option 3) 0.6 J Option 4) zero

As we discussed in concept

Zero Work -

$\Theta = \frac{\pi }{2}$

- wherein

Force and  displacement vectors are Perpendicular to each other

$W=fs\:\cos 90^{\circ}$

$W=0$

Option 1)

6 ×103 J

Option is incorrect

Option 2)

6 J

Option is incorrect

Option 3)

0.6 J

Option is incorrect

Option 4)

zero

Option is correct

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