Physics: Force of 92 N is exerted horizontally on an 18 kg box of books. The coefficient of kinetic friction between the floor and the box is 0.35. Find the net work done on the box.

Force of 92 N is exerted horizontally on an 18 kg

Ответ:

dondre54

12.02.2022

Complete Question

Force of 92 N is exerted horizontally on an 18 kg box of books, initially at rest , 7.6 m across a floor . The coefficient of kinetic friction between the floor and the box is 0.35. Find the net work done on the box.

The value is $W_{net} = 230 \ J$

Explanation:

From the question we are told that

The force exerted is $F = 92 \ N$

The mass of the box is $m = 18 \ kg$

The coefficient of kinetic friction is $\mu_k = 0.35$

The distance covered is $d = 7.6 \ m$

Generally net workdone is mathematically represented as

$W_{net} = F_{net} * d$

Here $F_{net}$ is the net force experienced by the box of books which is mathematically represented as

$F_{net} = F - \mu_k * m * g$

=> $F_{net} = 30.26 \ N$

$W_{net} = 30.26 * 7.6$

=> $W_{net} = 230 \ J$

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Ответ:

jessb4110

12.08.2022

Physics

Un chivo expiatorio es la denominación que se le da a una persona o grupo de ellas a quienes se quiere hacer culpables de algo con independencia de su inocencia, sirviendo así de excusa a los fines del inculpador. De manera más específica, este apelativo se emplea para calificar a aquellos sobre quienes se aplica injustamente una acusación o condena para impedir que los auténticos responsables sean juzgados o para satisfacer la necesidad de condena ante la falta de culpables

Explanation:

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Force of 92 N is exerted horizontally on an 18 kg box of books. The coefficient of kinetic friction between the floor and the box is 0.35. Find the net work done on the box.

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