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JulsSmile [24]
3 years ago
11

5. A construction worker on a high-rise building is on a platform suspended between two cables as illustrated below. The constru

ction worker weighs 850 N, the plank weighs 450 N, and the tension in the left cable is 550 N.

Physics
1 answer:
Natalka [10]3 years ago
4 0

Answer:

a) Tc = 750 [N]  ;b) See the explanation below.

Explanation:

To solve this problem, we first need a graphical explanation of this, as well as knowing the corresponding questions. Therefore, a search was carried out in google, in the attached image we will find a graphical description of the problem.

b)

The solution of this type of problem corresponds to the use of Newton's third law, applying static which tells us that the sum of the forces in a system in equilibrium without movement must be equal to zero.

a)

In this way we can find by means of a sum of forces on the y axis equal to zero:

- 850 - 450 + 550 + Tc = 0

Tc = 750 [N]

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The y location needs to factor in the downwards acceleration of gravity too, which is 9.81m/s^2. We need the equation dist. = V initial*time + 0.5*acceleration*time^2.

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3 years ago
Jonah is trying to move his 22-kg desk by pushing on it with a force of 130 N, but his brother is leaning on it with a downward
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Answer:

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Explanation:

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Fn = mg + 24

Fn = (22)(9.8) + 24

Fn = 240

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∑F = ma

130 − Fnμ = 0

Fnμ = 130

μ = 130 / Fn

μ = 130 / 240

μ = 0.54

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The chemical bonds alow it to pass to the other object.
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