Answer :
The gravitational force does work equal to the product of the mass of the book and the distance it is lifted vertically.
When a person lifts a book from the floor to a tabletop, they are exerting a force against the force of gravity. The work done by the gravitational force can be calculated using the equation:
Work = Force x Distance
In this case, the force is the weight of the book, which is equal to its mass multiplied by the acceleration due to gravity ([tex]9.8 m/s^2[/tex]). The distance is the vertical distance the book is lifted, which is 1.5 meters.
Given that the mass of the book is 2 kg, the work done by the gravitational force can be calculated as follows:
Work = (Mass x Acceleration due to gravity) x Distance
= [tex](2 kg x 9.8 m/s^2) x 1.5 m[/tex]
= [tex]29.4 Joules[/tex]
Therefore, the gravitational force does 29.4 Joules of work on the book as it is lifted from the floor to the tabletop.
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