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katrin [286]
3 years ago
8

Peyton and Vanessa are having an in-depth conversation about whether moral standards and concepts hold across cultures, or wheth

er they are relative. What type of ethics are they considering?
Physics
2 answers:
GaryK [48]3 years ago
8 0

Answer:

Moral Relativism

Explanation:

It is often thought that relativism in ethics is warranted by the vast difference in moral opinions in a society. Moral relativism is a metaphysical thesis, that is, it is a statement about reality, about how things are. For relativism, there are no universal standards or absolute truths. Infanticide, for example, can be accepted in some cultures and rejected by others without any way of determining whether this act is in itself morally permissible or wrong.

How Peyton and Vanessa are having an in-depth conversation about whether moral standards and concepts hold across cultures or are relative. We can say that they are arguing within the concepts of moral relativism.

Tanzania [10]3 years ago
3 0

Um... This is not exactly physics...(Although, this school of thought is most likely Moral Relativism.)

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Complete Question:

A uniform rod of mass 1.90 kg and length 2.00 m is capable of rotating about an axis passing through its center and perpendicular to its length. A mass m1 = 5.40 kgis  attached to one end and a second mass m2 = 2.50 kg is attached to the other end of the rod. Treat the two masses as point particles.

(a) What is the moment of inertia of the system?

(b) If the rod rotates with an angular speed of 2.70 rad/s, how much kinetic energy does the system have?

(c) Now consider the rod to be of negligible mass. What is the moment of inertia of the rod and masses combined?

(d) If the rod is of negligible mass, what is the kinetic energy when the angular speed is 2.70 rad/s?

Answer:

a) 8.53 kg*m² b) 31.1 J c) 7.9 kg*m² d) 28.8 J

Explanation:

a) If we treat to the two masses as point particles, the rotational inertia of each mass will be the product of the mass times the square of the distance to the axis of rotation, which is exactly the half of the length of the rod.

As the mass has not negligible mass, we need to add the rotational inertia of the rod regarding an axis passing through its centre, and perpendicular to its length.

The total rotational inertia will be as follows:

I = M*L²/12 + m₁*r₁² + m₂*r₂²

⇒ I =( 1.9kg*(2.00)²m²/12) + 5.40 kg*(1.00)²m² + 2.50 kg*(1.00)m²

⇒ I =  8.53 kg*m²

b)  The rotational kinetic energy of the rigid body composed by the rod and  the point masses m₁ and m₂, can be expressed as follows:

Krot = 1/2*I*ω²

if ω= 2.70 rad/sec, and I = 8.53 kg*m², we can calculate Krot as follows:

Krot = 1/2*(8.53 kg*m²)*(2.70)²(rad/sec)²

⇒ Krot = 31.1 J

c) If the mass of the rod is negligible, we can remove its influence of the rotational inertia, as follows:

I = m₁*r₁² + m₂*r₂² = 5.40 kg*(1.00)²m² + 2.50 kg*(1.00)m²

I = 7.90 kg*m²

d) The new rotational kinetic energy will be as follows:

Krot = 1/2*I*ω² = 1/2*(7.9 kg*m²)*(2.70)²(rad/sec)²

Krot= 28.8 J

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3 years ago
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