4. Mr. Ames is dragging a box full of books from his office to his car. The box and books together have a

Physics

1 answer:

sergey [27]3 years ago

8 0

Answer:

F = 73.7 N = 74 N (rounding off)

Explanation:

In order to get the box to start moving, Mr. Ames must push it with a force equal to the frictional force acting on it. Therefore, this force can be calculated through the following formula:

$F = frictional force = \mu R$

where,

μ = coefficient of friction = 0.55

R = Normal Force on Box = Weight of Box with books = 134 N

Therefore,

$F = (0.55)(134\ N)\\$

F = 73.7 N = 74 N (rounding off)

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