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LiRa [457]
3 years ago
10

A weight lifter is trying to lift a 1500-N weight but can apply a force of only 1200 N on the weight. One of his friends helps h

im lift it all the way. What force was applied to the weight by the weight lifter's friend?
Physics
1 answer:
aliya0001 [1]3 years ago
4 0

Answer:

300 N

Explanation:

We have three forces acting on the object:

- W = 1500 N, downward: the weight of the object

- F1 = 1200 N, upward: the force exerted by the first man

- F2, upward: the force exerted by the friend

In order to lift the object, the sum of the two forces F1 and F2 must be at least equal to the weight of the object W. Therefore we can write

F_1 +F_2 = W

And from this equation, we can find the magnitude of F2:

F_2 = W-F_1 = 1500 N-1200 N=300 N

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A medical emergency known as hypothermia happens when your body results in a dangerously low body temperature.

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  • After being exposed to chilly, rainy, or windy environments, hypothermia develops.
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Learn more about the Hypothermia with the help of the given link:

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I understand that the question you are looking for is "Which client body temperatures are indicative of moderate hypothermia? Select all that apply.

1. 80° F (26.7° C)

2. 84° F (28.9° C)

3. 88° F (31.1° C)

4. 92° F (33.3° C)

5. 96° F (35.6° C)"

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Eduardwww [97]

Answer:

A. Conservation of energy.

Explanation:

Kirchhoff's loop rule is an example of conservation of energy.

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