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allsm [11]
4 years ago
5

The free body diagram shows a box being pulled to the left up a 25-degree incline

Physics
2 answers:
Marysya12 [62]4 years ago
7 0

The answer according to E2020 is 45N

Greeley [361]4 years ago
5 0
The question is incomplete but still I answer to assume your thinking.
The picture is attached below!.
Here,
F is the force with which you pull up the incline.
N is the normal force.
w is the weight acting downward.
Axis are mentioned in the attached picture.
Concept:
You can see there is no movement of object in the y-direction that means acceleration is zero in y-direction, sum of all the forces in y-direction equal to zero.
According to newton second law,
<span>∑ F = ma
</span>As, acceleration is zero in y-direction, so right hand side is zero in the above equation.
<span>∑ F = 0</span>
N-wcosθ=0 
N= m*g*cos25°
N= m*(9.8)*(0.9063)
N= 8.8817*m
By putting the value of mass(m)(not given in the question) you will get the answer.
Hopefully, this is the answer of your question.


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Answer:

W = -1844.513 J

Explanation:

GIVEN DATA:

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change in displacement is  = -6.753 - (-11) = 4.25 m

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work done by gravity is W = F \delta r cos\theta

W = 725.2 \times 4.25 \times cos 180

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3 years ago
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IceJOKER [234]

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<u>Explanation:</u>

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jonny [76]

Answer:

C

Explanation:

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5 0
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Answer:

A)heat energy is produced but not light energy

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