Question

A girl is carrying a school bag of 3 kg mass on her back and moves 200m on a levelled road. What

will be the work done against the gravitational force if g=0?​

Answer 1

Answer:

0

because Mass. Gravity. height

so ans 0

please mark me as a brainliest

Answer 2

Given:

Mass of the bag= 3kg

Distance travelled= 200m

Acceleration due to gravity(g)= 0

To Find:

Work done against the gravitational force.

Solution:

The numerical problem can be solved by the following process.

Now,

Mass($m$)= 3kg

Distance(S)= 200m

Acceleration($g$)= 0

Work done($W$)=?

(Since all quantities are given in SI units, no unit conversion is required.)

The expression for work done is-

$W=F.S$ ---(1)

where F represents the force applied on the object and S is the measure of displacement of the object.

To find the amount of force applied, we use the expression-

$F=ma$ ; where 'm' is the mass and 'a' is acceleration.

$F$= 3kg x 0$m/s^{2}$

$F$= 0 N

On substituting F in equation (1),

$W$= 0 N x 200m

$W$= 0 J

Hence, the work done in carrying the bag against gravitational force is 0.