5

The tWo ropas s0on (Flgure are usud (0 owar 255 kg plano oxaclly In Irom socond-slcry wrindow (ho ground,How much work doro by T ; Expross your answer In joules.Azd...

Question

The tWo ropas s0on (Flgure are usud (0 owar 255 kg plano oxaclly In Irom socond-slcry wrindow (ho ground,How much work doro by T ; Expross your answer In joules.AzdFlgureSubmllAoquatt Anewer1830 N 60"1295 N 450PontHow mich work Is dono by T ; Expross omrnstan In joulos-2500 NAzd12500

The tWo ropas s0on (Flgure are usud (0 owar 255 kg plano oxaclly In Irom socond-slcry wrindow (ho ground, How much work doro by T ; Expross your answer In joules. Azd Flgure Submll Aoquatt Anewer 1830 N 60" 1295 N 450 Pont How mich work Is dono by T ; Expross omrnstan In joulos- 2500 N Azd 12500



Answers

WORK





The work $W$ (in joules) done when lifting an object varies jointly with the mass $m$ (in kilograms) of the object and the height $h$ (in meters) that the object is lifted. The work done when a 120-kilogram object is lifted 1.8 meters is 2116.8 joules. How much work is done when lifting a 100-kilogram object 1.5 meters?

This example is going to look at a single lifting machine. All right. So this is just the machine. It's powered by an engine quantifying the work that the machine does Power provided by the machine and the power provided to the machine by the engine. And then we're going to find the efficiency of the machine. All right. So, we have some numbers here. We have This machine is going to be with switching a mass of 3000 kg and it's going to be lifting it to a height of 8.00 m and it's going to do that and 20.0. All right. So, the first thing we want to do is calculate the work output. So, in other work out in force times distance And our force is going to be our 3000 kilograms Times are acceleration to your gravity. So 9.81 m per second square, which will give us Newman Times Distance race, which is our 8.0 m here is um Yes. All right. That's going to give us work in jewels. Which is what we want to work out equals 235 killer jewels. Right next from that. We want to calculate the power and we know that is just work over time. Um, Uh huh. So, power out equals our work out which was 235 killer jewels Divided by the time it took, which we were given as 20 seconds. Not equals 11.8 kill a lot. Okay, the next part is pretty straightforward. Um, were given the power input in horsepower. We want to convert that to kilowatts. Um, so we need our conversion factors. We have 18 horsepower And we know that one hp equals time .746. Your rituals See that over one hp. And that. I'm sorry, I killed your skill. And that gives us a Power input of 13.4 kW. Okay, so that's up power in next. We wanna calculate the efficiency efficiency, which we know is either power of overpower in why work out over work. And you can use either one of these. I'll use power because the numbers are in my head. So we have workout 11.8, 2, lots Over work in 13.4 kW. And that's going to give us ratio of 0.87. Okay, so our efficiency is 88%. So pretty simple and straight forward on that.

We're told that work done so work done varies jointly as an objects mass and its height, its mass and height. And then we need a constant. Yeah, so when it's lifted sorry when a massive of 120 kg is lifted 1.8 m, we have work done of 2116.8 jewels. Yeah. Now how much work is done when we lift 100 kg object 1.5 m? Well, let's as always, solve. Actually, this year will solve for a constant constant is equal to work divided by mass times. Height. We use our initial conditions given here 2116.8 quite by 100. Nope, not 100 120 times 1.8. And what is that? It's 9.8. So now we confined the work done extra original equation. So that's 9.8 as a constant times. A massive 100 kg lifted too high of 1.5 m. It gives us 1470 jewels

7.63. So we have this horizontal force here pushing a block up a frictionless incline. So we want to find out how much work this force does, how much work gravity does, how much work the normal force does. And then, with the final speed of the block, will be assuming that it starts from rest. So for party here, the, um, angle between the direction of the force and the displacement of this block is 32 degrees use. So the work done by this force is going to be its magnitude times the distance of five meters times the coastline of 32 degrees. So this is 640 Jules. Now for the work that gravity is doing the force. The magnitude of the forest is, of course, just the weight of the block still moving the same distance. And now the the angle between the force of gravity and the displacement is 122 degrees. So the work the gravity does is negative. 470. Jules. Now the normal force he's here is perpendicular to the displacement. And so the normal force the zero work now to find the speed. We can use the relationship between work and kinetic energy, so it needs to be the total work. So did the work done by the force, plus the worked up by gravity plus the worked up by the normal forest, which is zero is going to eat with the final kinetic energy of our block. So final speed is the square root of two times the network divided by the Mass. This is 640 minus 470 Jules, and so its final speed is 4.3 meters per second.

The work done by the tractor, I would be willing the force exerted by the tractor at 5000 new 20th off force multiplied by the magnitude of the displacement multiplied by co sign of data the angle between the force exerted by the tractor and the displacement. So this would be then 5000 Newtons. I multiplied by 100 meters, multiplied by co sign of 30 degrees. We know that then co sign of 30 degrees is 300.866 And so this is giving us Ah, approximately 86.6. I'm multiplied by 5000 units jewels. And so we can say that this would be meet the approximately. If we ran into this toe 90 we could say approximately 45 23 for so foreign and 50,000 jewels or 450 killer jewels. And so we can say that Then this is the closest to see where C is 433 Killah jewels again. We rounded up. So it's actually going to be closer to 433. That is the end of the solution. Thank you for watching


Similar Solved Questions

5 answers
L L H 1 Jtee 1 1Itp &1
L L H 1 Jtee 1 1 Itp & 1...
5 answers
14, Find the absolute maximum and absolute minimum values of f(z) = 8cl/3 24/3 on the interval [~8,8]. Answer: The absolute minimum value is f(_8) = -32 and the absolute maximum value is f(2) 64/2 ~ 7.559
14, Find the absolute maximum and absolute minimum values of f(z) = 8cl/3 24/3 on the interval [~8,8]. Answer: The absolute minimum value is f(_8) = -32 and the absolute maximum value is f(2) 64/2 ~ 7.559...
5 answers
State whether the structure is the &- or Bform;CH;OHHOH OHHOHHOH
State whether the structure is the &- or Bform; CH;OH HO H OH H OH H OH...
5 answers
Question 15Mark this questionDida bought a scratch ticket for $2.00 The potential payoffs and probability of those payoffs are shown below:Value (in $)Probability0.000150.500.501.000.202.0001010.000.05What is the expected value for the scratch ticket that Dida bought?S1.1552.00S0.50S1.50
Question 15 Mark this question Dida bought a scratch ticket for $2.00 The potential payoffs and probability of those payoffs are shown below: Value (in $) Probability 0.00 015 0.50 0.50 1.00 0.20 2.00 010 10.00 0.05 What is the expected value for the scratch ticket that Dida bought? S1.15 52.00 S0.5...
5 answers
1. 500.0 mL of0.500 M HCI solution reacts with $.00 g of Mg t0 give hydrogen gas and aqueous magnesium chloride:-Fhe volume of Hz(g) collected is |.OOL at 2.Satm total pressure, and 300K_ Calculate the pereent yield MgClz (Water vapor pressure at 300K is 26mmHg) (15 points) 2 Hc vr ~A. 0312 44 Yya 4L Im S4 TA R 4.544 0 M2AA
1. 500.0 mL of0.500 M HCI solution reacts with $.00 g of Mg t0 give hydrogen gas and aqueous magnesium chloride:-Fhe volume of Hz(g) collected is |.OOL at 2.Satm total pressure, and 300K_ Calculate the pereent yield MgClz (Water vapor pressure at 300K is 26mmHg) (15 points) 2 Hc vr ~A. 0312 44 Yya 4...
5 answers
Find the radius of convergence of the power series. (If You need to use c orenter INFINITY or -INFINITY respectively:)(-1)"_ n + 8 n =
Find the radius of convergence of the power series. (If You need to use c or enter INFINITY or -INFINITY respectively:) (-1)"_ n + 8 n =...
5 answers
A student ran the following reaclonthe laboratory 769 K:Nz(g) 3Hz(g)ZNH,(g)When she introduced 3.66*10-2 moles of Nz(g) and 5.86*10" muolcs of H,(g) into NHs(g) be 6.44S*10- M:00 liter container; she found the equilibrium concentration ofCalculate the equilibrium constant, Kc' she obtained for this reaction.SmbminanewttRetry Enllro drouemoro group attempi retiinind
A student ran the following reaclon the laboratory 769 K: Nz(g) 3Hz(g) ZNH,(g) When she introduced 3.66*10-2 moles of Nz(g) and 5.86*10" muolcs of H,(g) into NHs(g) be 6.44S*10- M: 00 liter container; she found the equilibrium concentration of Calculate the equilibrium constant, Kc' she ob...
5 answers
Asurvey finds that 15% of Americans cannot part with their landlines A researcher believes that the proportion is higher for people older than 50.A survey of _ sample of 1020 Americans over the age of f 50 found that 158 still have landlines: Test the claim of the researcher at the 5% level of significance: Your answer should showall four steps of the hypothesis test:Do not show the workfor your calculations here: Just show your final answers
Asurvey finds that 15% of Americans cannot part with their landlines A researcher believes that the proportion is higher for people older than 50.A survey of _ sample of 1020 Americans over the age of f 50 found that 158 still have landlines: Test the claim of the researcher at the 5% level of signi...
5 answers
Uonocalot Fassignmeni-taDraw the structure of the compound you would expect from E2 reaction of the molecule below wit NOHball & sick ~i- - JabelsConsider FIZ stereochcmistry of alkenes You do not have explicitly draw H atoms_ choice, draw tkc most substifulcd alkenc Fodec In cascs where thctc E
Uonocalot Fassignmeni-ta Draw the structure of the compound you would expect from E2 reaction of the molecule below wit NOH ball & sick ~i- - Jabels Consider FIZ stereochcmistry of alkenes You do not have explicitly draw H atoms_ choice, draw tkc most substifulcd alkenc Fodec In cascs where thct...
5 answers
2. Compute det A[1 det A forA = 2 Lo5 4 ~2~1 0
2. Compute det A [1 det A forA = 2 Lo 5 4 ~2 ~1 0...
5 answers
Please Use yourkeyboard (Don't use handwriting)Thank you..I need new and unique answers,please. (Use your own words, don't copy andpaste)PHC 212What do you think the best media method forCommunicating Effectively with Patients, and why? ( i need 500 words more details please)
Please Use your keyboard (Don't use handwriting) Thank you.. I need new and unique answers, please. (Use your own words, don't copy and paste) PHC 212 What do you think the best media method for Communicating Effectively with Patients, and why ? ( i need 500 words more details please)...
5 answers
The graph of the velocity function of a particle is shown in the figure. Sketch the graph of a position function.
The graph of the velocity function of a particle is shown in the figure. Sketch the graph of a position function....
5 answers
Which of the following compound contain an ionic bond
which of the following compound contain an ionic bond...
5 answers
QuestionWhat Is the major product for the following reaction? EtOH EIONaheat
Question What Is the major product for the following reaction? EtOH EIONa heat...
5 answers
Question5 pesA25-kg block slidingon a rough horizontal surface attached t0. one end of a horizontal spring (k = 300 Nm) which has its other end - nxed: If this system is displaced 30 cm horizontally from the equilibrium position and = released from rest; the block first reaches the equilibrlum position with _ speed 0f 3.0 Ms: Whatis the coefhcient of kinetic friction between the block and the horizontal surfece on which it slides?0.310.440.240.130.13
Question 5 pes A25-kg block slidingon a rough horizontal surface attached t0. one end of a horizontal spring (k = 300 Nm) which has its other end - nxed: If this system is displaced 30 cm horizontally from the equilibrium position and = released from rest; the block first reaches the equilibrlum pos...

-- 0.030125--