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Sagot :
According to the given statement 20.49J work does gravity do on the book.
What is work in a physics?
When an object changes over a range by an external force, at least a portion of that force must be applied there in plane of the displacement. This is known as work in physics. Stimulates into an object to cause some displacement is what is referred to as work. The ability to perform tasks is referred to as energy. The work is consistently the same. ’s kinetic energy are two examples of the various types of energy. Joule is the SI sequence of tasks (J). The work accomplished by a force with one newton creating a motion of one meter is known as a joule.
Briefing:
W=Fd
W=mgd=mgh
W=(1.7kg)(9.8m/s^2)(2m-0.77m)
W=20.49J
The work is equal to 20.49J.
To know more about Work visit:
https://brainly.com/question/18094932
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