Answered

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a bear scratches his claws on a big pine tree. Does the bear do work on the tree? why or why not?


(btw it has to do with physics) ITS NOT A GENERAL QUESTION.

Sagot :

rafaleo84

Answer:

See the explanation below.

Explanation:

Work in physics is defined as the product of force by the distance that the body travels in the direction of the force.

It can be represented by means of the following equation.

[tex]W=F*d[/tex]

where:

W = work [J]

F = force [N]

d = distance [m]

In the given example the work is zero since the tree does not move, therefore the bear exerts a force on the tree. But there is no talk of movement of the tree, therefore the work is zero.

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