#### Question Details

(solution) Consider the force field set up by wind on the surface of a

Consider the force field set up by wind on the surface of a partially treed park. The force

field for the surface of the park is illustrated in Figure 2. This figure shows no force in the

treed area, where there is no wind, and a non-zero force in an open area, where there is wind.

Assume the wind in the open area exerts a force on a person proportional to the mass of the

person with constant ___ N/kg. (The only objects of interest are people on foot). The treed

area is such that people can walk through it. Points A, B, C and D mark the corners of a

100 m by 120 m rectangle. A to B = C to D = 120 m, B to C = D to A = 100 m.

Figure 2: Non-Conservative Force Field where force is either zero or ___ N/kg

(a) Prove that this is a non-conservative force field. (In a conservative force field, zero net

energy is required to move an object along any path that ends where it started.)

(b) Show that the concept of constant energy contours does not exist in a non-conservative

force field. This can be done by first showing that the energy of an object is not changed

if it is moved along A-B-C-D in Figure 2, which means points A and D must be at the

same energy levels. Then show that this is not the case (i.e. the energy does change) if

the object is moved in a straight line from point A to D.

Consider the force field set up by wind on the surface of a partially treed park. The force

field for the surface of the park is illustrated in Figure 2. This figure shows no force in the

treed area, where there is no wind, and a non-zero force in an open area, where there is wind.

Assume the wind in the open area exerts a force on a person proportional to the mass of the

person with constant ___ N/kg. (The only objects of interest are people on foot). The treed

area is such that people can walk through it. Points A, B, C and D mark the corners of a

100 m by 120 m rectangle. A to B = C to D = 120 m, B to C = D to A = 100 m. Figure 2: Non-Conservative Force Field where force is either zero or ___ N/kg (a) Prove that this is a non-conservative force field. (In a conservative force field, zero net

energy is required to move an object along any path that ends where it started.)

(b) Show that the concept of constant energy contours does not exist in a non-conservative

force field. This can be done by first showing that the energy of an object is not changed

if it is moved along A-B-C-D in Figure 2, which means points A and D must be at the

same energy levels. Then show that this is not the case (i.e. the energy does change) if

the object is moved in a straight line from point A to D.

**Solution details:**

Answered

QUALITY

Approved

ANSWER RATING

This question was answered on: * Sep 13, 2020 *

* * Solution~00021147593472.docx (25.37 KB)

##### Pay using PayPal (No PayPal account Required) or your credit card . All your purchases are securely protected by .

#### About this Question

STATUSAnswered

QUALITYApproved

DATE ANSWEREDSep 13, 2020

EXPERTTutor

ANSWER RATING

#### GET INSTANT HELP/h4>

We have top-notch tutors who can do your essay/homework for you at a reasonable cost and then you can simply use that essay as a template to build your own arguments.

You can also use these solutions:

- As a reference for in-depth understanding of the subject.
- As a source of ideas / reasoning for your own research (if properly referenced)
- For editing and paraphrasing (check your institution's definition of plagiarism and recommended paraphrase).

#### NEW ASSIGNMENT HELP?

### Order New Solution. Quick Turnaround

Click on the button below in order to Order for a New, Original and High-Quality Essay Solutions.
New orders are original solutions *and precise to your writing instruction requirements. Place a New Order using the button below.*

WE GUARANTEE, THAT YOUR PAPER WILL BE WRITTEN FROM SCRATCH AND WITHIN A DEADLINE.