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(4) Horse Power A horse pulls a cart with a force of 175.0 N at an angle of 31.00 with respect to the horizontal and moves along at a speed of 9.4 km/hr How much wo...

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(4) Horse Power A horse pulls a cart with a force of 175.0 N at an angle of 31.00 with respect to the horizontal and moves along at a speed of 9.4 km/hr How much work does the horse do in 9.5 min?Submit AnswerTries 0/8What is the average power of the horse?Submit AnswerTries 0/8This discussion is closed_Send Feedback

(4) Horse Power A horse pulls a cart with a force of 175.0 N at an angle of 31.00 with respect to the horizontal and moves along at a speed of 9.4 km/hr How much work does the horse do in 9.5 min? Submit Answer Tries 0/8 What is the average power of the horse? Submit Answer Tries 0/8 This discussion is closed_ Send Feedback



Answers

A horse pulls a cart with a force of $40 \mathrm{lb}$ at an angle of $30^{\circ}$ above the horizontal and moves along at a speed of $6.0 \mathrm{mi} / \mathrm{h} .$ (a) How much work does the force do in $10 \mathrm{~min} ?$ (b) What is the average power (in horsepower) of the force?

Hello. So for this question and you know that we've done is we go to forced and displacement. Right? So we got an angle data. Okay what is moving this way? So the force is going to be f course data. Okay. That's what you have here. There was the force has to be the same direction as a motion. Okay? So this is moving along the ground or the floor. The force has to be in the same direction. So this is the fourth. F. We need to resolve it okay along the direction of motion. You know the distance, support? The velocity times time. Okay. Uh we can get the velocity and then the time was 10 minutes we have to convert at the seconds. Okay? And then we're gonna get these angels once you have the power is work done over time. So they're just gonna be this value right here. Over time. The time is 10 minutes converted to second out within 60. Okay? So if you do that you get 413 what's or you can also do this in horsepower. Okay. Thank you very much.

This question over three concepts, of course, with the free water diagram for a slave, second, the newton's second law along the hospital in the vertical direction, and 30. Stop. No question for power. Uh for moving with constant speed. So from free body diagram, let's try the free body diagram for the sledge. So the sledges pulling by the horse with a force that we and the weight which is acting vertically downwards MG. And a normal reaction force which is vertically upward. That is often an affection force F. And consider the horizontal direction as opposed to works and the vertical direction as opposed to so from little second law of motion, since the sledges not moving along the vertical direction, so we can write the submission of world forces along river is zero. And from this you can buy the magnitude of the normal election forces securely to the magnitude of to wait and see. And the friction force, which has a magnitude of New times F. And that is energy and which is cuba into the pulling force F. B. For constant speed. Because summation of all forces along the extraction is okay, so we can write the power PS the pulling force that is new and G. Into this baby. And from this they spirit vis the power upon mung. I'll substitute the value, the status, the power by mr. Uh Sledges pullers, 1.060 hp. So we need to convert this into words. Therefore multiply by a 746 Work upon one HP paul. The coefficient perfection is 0.115 into the mask, that is 204, 17 kg. The the G. That is 9.81 m four second square Arthur Speed by which the heart is moving is 3.4 do meters per second.

So there's a horse that plows 200 meter long furrow. That's the ah, distances. 200 meters I It takes five minutes and he exerts 750 Newtons of force. That's the force. So we're asked to calculate the power output in Watts and in horsepower. So work is, ah force times distance in the direction as long as they're in the same direction. So the force is 750 Newtons and the distance is 200 meters. So I'm gonna go ahead and calculate that 750 times 200 gives us 150 fouls and three zeros, by the way, Uh, Jules, So if we divide that by seconds, Jules per seconds, that's gonna give us watts. So five minutes, though we need to convert that two seconds. There are 60 seconds in a minute. So five times 60 is 300 seconds. Um, so we've got ah, power is 150 1000 jewels in 300 seconds. So this is going to give us our watts divided by 300. That's 500 watts. All right, We're now yes, to convert that to horse power, So all we need is a conversion factor from Watts. Two horsepower. So 500 watts and then I need to know watts toe horsepower. So I'm going to go to a chart and look up the conversion factor for Watts to horse power. Um, let me see here. So it's telling me 746 take a 746 watts is one horsepower one. So 500 divided by 746 746 is I'm trying to find somewhere to write. This, um 500 divided by 746 is zero and 67 hundreds horse power. So's 6700 horsepower and 500 watts.

In this problem we are given, It was just moved by more is equal to 900 nature, and the angle between forcing this specimen is equal to mhm. 40 Degree. And the 4th tied by the man on the move is you complete 35.0 Newton. We are asked to find the burden by the men in moving them over. Mhm. So biden is equal to as we know the F. S. Posed to. We will secure the village where Fs 35.0. You can. This is 900 m. Okay. And Sita is 4°.. Although that was 40 or zero degree. When we saw this week, it wouldn is equal to 24,100 30 10 m, Which is equal to 24,130 job. Which is the answer this question. Thank you for watching video.


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