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vovangra [49]
2 years ago
8

Keisha writes that if an object has external force acting on it then the object can be in dynamic equilibrium but not staric eq

uilibrium
Physics
1 answer:
mr Goodwill [35]2 years ago
7 0

The statement that best describes Keisha errors is an object in either state of equilibrium must have no net force acting on it.

<h3>What is an object at dynamic equilibrium?</h3>

An object is said to be on a dynamic equilibrium when it moves at a constant speed, and all the forces on the object are balanced.

An object is also said to be on static equilibrium when it is unable to move because all the forces which act on it compensate for one another.

Therefore, the statement that best describes Keisha errors is an object in either state of equilibrium must have no net force acting on it.

Learn more about force here:

brainly.com/question/25239010

#SPJ1

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A 59 kg man has a total mechanical energy of 150,023. J. If he is swinging downward and is currently 2.6 m above the ground, wha
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Answer:

v = 70.95 \ m/s.

Explanation:

Given data:

Mass of the man, m = 59 \ kg

Total mechanical energy, E_{i} = 150,023 \ \rm J

Height, h = 2.6 \ m

Suppose there is no external force acting on the man. In this situation, the total mechanical energy (kinetic + potential) will remain steady.

Let the speed of the man at 2.6 m be <em>v</em>.

Thus,

E_{i} = E_{f}

E_{i} = \frac{1}{2}mv^{2} + mgh

150023 = 0.5 \times 59 \times v^{2} + 59 \times 9.80 \times 2.6

\Rightarrow \ v = 70.95 \ m/s.

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Answer:

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