Physics, 23.01.2020 00:31 neelydeY23

Arope is lying on the floor and has a mass which applies a force of 3 n/m. how much work is required to raise one end of the rope to a height of 2 meters?

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Answer from: chjam265

The work required to raise one end of the rope to a height of 2 meters with an applied force of 3 N is 6 joules.

We can calculate the work required to raise one end of the rope to a height of 2 meters as follows:

$W = F*d*cos(\theta)$

Where:

F: is the force exerted = 3 N (newton: unit of force)

d: is the displacement = 2 m

θ: is the angle between the applied force and the displacement

Since the force and the displacement are in the same direction, θ = 0, so:

$W = F*d*cos(\theta) = Fdcos(0) = F*d$

Hence, the work done is:

W = 3 N*2m = 6 J

Therefore, it is required 6 J of work.

You can see another example of work calculation here: link

I hope it helps you!

Answer from: 76022sfox

At least 6 N, assuming that the rope has a length of more than 2 meters.

Explanation:

In general, if it takes a force of F(h) newtons to lift an object at height , the work done lifting the object from h = a to h = b can be found using the definite integral about :

$\displaystyle W = \int \limits_{a}^{b} F(h)\, dh$ .

If the value of F(h) is a constant $m \cdot g$ regardless of height , then the result of the integral would be

$\displaystyle \int \limits_{a}^{b} (m \cdot g)\, dh = \left[m \, g\, h \right]_a^b = m\cdot g \, (b - a)$ .

However, in this case the value of F(h) does depend on the value of .

At height $h = 0\; \rm m$ , nothing is being lifted. The amount of force required would be zero. At height $h = 1\; \rm m$ , one meter of the rope is in the air. That requires a force of at least $1\; \rm m \times 3\; N \cdot m^{-1} = 3\; N$ .In general, at a height of

meters, the force required would be at least $3\, h$ Newtons.

In other words, $F(h) = 3\; h$ where is in Newtons and is in meters.

Evaluate the integral:

$\begin{aligned} W &= \int \limits_{a}^{b} F(h)\, dh \cr &= \int \limits_{0}^{2}3\, h \, dh && \text{Apply the power rule.}\cr &= \left[\frac{3}{2}\,h^2\right]_{0}^{2}\cr &= \frac{3}{2} \times 2^2 \cr &= 6\end{aligned}$ .

Arope is lying on the floor and has a mass which applies a force of 3 n/m. how much work is required

Answer from: Quest

relativism, roughly put, is the view that truth and falsity, right and wrong, standards of reasoning, and procedures of justification are products of differing conventions and frameworks of assessment and that their authority is confined to the context giving rise to them. more precisely, “relativism” covers views which maintain that—at a high level of abstraction—at least some class of things have the properties they have (e.g., beautiful, morally good, epistemically justified) not simpliciter, but only relative to a given framework of assessment (e.g., local cultural norms, individual standards), and correspondingly, that the truth of claims attributing these properties holds only once the relevant framework of assessment is specified or supplied. relativists characteristically insist, furthermore, that if something is only relatively so, then there can be no framework-independent vantage point from which the matter of whether the thing in question is so can be established.

relativism has been, in its various guises, both one of the most popular and most reviled philosophical doctrines of our time. defenders see it as a harbinger of tolerance and the only ethical and epistemic stance worthy of the open-minded and tolerant. detractors dismiss it for its alleged incoherence and uncritical intellectual permissiveness. debates about relativism permeate the whole spectrum of philosophical sub-disciplines. from ethics to epistemology, science to religion, political theory to ontology, theories of meaning and even logic, philosophy has felt the need to respond to this heady and seemingly subversive idea. discussions of relativism often also invoke considerations relevant to the very nature and methodology of philosophy and to the division between the so-called “analytic and continental” camps in philosophy. and yet, despite a long history of debate going back to plato and an increasingly large body of writing, it is still difficult to come to an agreed definition of what, at its core, relativism is, and what philosophical import it has. this entry attempts to provide a broad account of the many ways in which “relativism” has been defined, explained, defended and criticized.

explanation:

Answer from: Quest

Not what goes around on earth but the universe too.

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Arope is lying on the floor and has a mass which applies a force of 3 n/m. how much work is required...

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