try to solve this:
a book of mass 1kg is on the floor. If the book is lifted from the floor to the top shelf which is 2 meters from the floor,how much work is done on the book?

In this problem, we can use the concept of storing energy which is the same as work where energy is changed from one body to another. The energy we will introduce here is potential energy.

For the formula, we will use:

PE = mgh

where

PE is the potential energy, the unit is in Joules, J

m is the mass, the unit is in kg

g is the gravity, 9.8 m/s²

h is the height, the unit is in meter, m

Given information

m = 1 kg

h = 2 m

W = PE = ?

Solving the problem

Let us solve for the work using the equivalent formula for potential energy.

PE = mgh

PE = (1 kg)(9.8 m/s²)(2 m)

PE = 19.6 N·m

Take note that potential energy is related to work in terms of energy, therefore W = 19.6 N·m

To learn more, just click the following links:

Relationship of potential and kinetic energy to work

https://brainly.ph/question/411277

Examples of potential energy

https://brainly.ph/question/78768

Characteristics of work in physics

https://brainly.ph/question/2230969

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