篮球比分

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  • 液壓傳動——能量的基礎知識
  • 本站編輯:杭州耐準精密機械有限公司發布日期:2019-10-27 17:14 瀏覽次數:

1、NENGLIANG

篮球比分NENGLIANGZAISHIJISHENGHUOZHONGSHIYIGEKANBUJIAN,MOBUZHUDEDONGXI。 TAZHISHIWOMENYONGLAIMIAOSHUYIGEWUTIXINGZHIDEYIGESHUYU,JIUXIANGYANSEYIHUOSHILENGNUANYIYANG。

篮球比分WOMENXIANJUYIXIELIZI,KANKANNAXIEWUZHISHIJUBEINENGLIANGDE:

篮球比分YIGEKUAISUYUNDONGDEWUTIJUYOUJIAODADEDONGNENG;

YIGEWENDUGAODEWUTIJUYOURENENG;

QIYOUDENGRANLIAOJUYOUHUAXUENENG;

篮球比分YUNDONGDEDIANZIJUYOUDIANNENGHEDIANCINENG。

篮球比分DANGWOMENSHUOYIGEWUTIJUYOUNENGLIANGSHI,WOMENZHUYAOGUANZHUYIXIALIANGDIAN:

NENGLIANGHUIDAOZHIZHEGEWUTIBENSHENHUIFASHENGSHENMEBIANHUA?

NENGLIANGSHIRUHEGAIBIANZHOUWEIDESHIWUDE,YEJIUSHISHUONENGLIANGSHIRUHECHUANDIDE?

QIANMIANWOMENSHUOGUO,NENGLIANGBINGFEISHIJIKANDEJIAN,MODEZHUDEWUTI,SUOYIHENNANHUACHUTADEYANGZI。DANSHIQINGKANTU1,RUGUONIYONGSHUBIAODIANJIZHEGEDONGTU,NEIMENIJIUZHENGZAIGEITASHIJIAYIDINGDEDONGNENG。

篮球比分ZONGSHANG,WOMENZHIDAO,NENGLIANGSHIKEYIZAIBUTONGWUTIZHIJIANCHUANDIDE。QINGKANTU2HETU3,DOUKEYIHENHAOZHENGMINGZHEYIDIAN。

DANGNENGLIANGZAIWUTIZHIJIANJINXINGCHUANDISHI,BIRANHUIYOUYIXIENENGLIANGHUIZAIZHEGEGUOCHENGZHONGSUNSHIDIAO,ZHEZHUYAOSHIYOUYUMOCAZHILEIDEZULIZAOCHENGDE。

篮球比分WOMENZHISUOYICHENGZHIWEISUNSHI,SHIYINWEITAMENBINGMEIYOUQIDAOWOMENXIWANGTAMENYINGGAIQIDAODEZUOYONG。YEJIUSHIMEIYOUZUOYOUYONGGONG,ZUODEDOUSHIWUYONGGONG。

LIRU:ZAIQICHEFADONGJINEI,DANGHUAXUENENGCONGQIYOUZHONGZHUANHUAWEIQICHEDEDONGNENGSHI,YIXIENENGLIANGHUIYIXIANGWAISANFARELIANGYIJIZAOSHENGDEXINGSHISUNSHIDIAOLE。

ZUIWANMEIDEYINQINGSHINIYONGSHOUMOSHANGQUSHIBINGLIANGDE,ERQIESHIWANQUANJINGYINDE。DANSHI,DAQIANSHIJIE,YUNYUNZHONGSHENG,MEIYOURENHEXITONGSHIRUCIDEWANMEI。SHENGHUOZHONGWOMENSUOKANDAODEYIQIENENGLIANGZHUANHUANXITONGDOUSHIYOUNENGLIANGSUNSHIDE。

ZHENGYINWEIMOCASUNSHIDECUNZAI,WOMENKEYIDECHUJIELUN,YOUXIAODESHUCHUNENGLIANGZONGSHIHUIXIAOYUSHURUDENENGLIANG。TU5HENHAODIGEIWOMENZHANSHILEZHEGEJIELUN。

BUGUO,RUGUONIJIASHANGSUNSHIDIAODENENGLIANG,NEIMENENGLIANGYIDINGSHISHOUHENGDE,YEJIUSHISHURUDENENGLIANGDENGYUYOUXIAODESHUCHUNENGLIANGJIASHANGSUNSHIDIAODENENGLIANG。RUXIASHUGONGSHISUOSHI。

篮球比分NENGLIANGSHURU = NENGLIANGSHUCHU + NENGLIANGSUNHAO

篮球比分NENGLIANGSHOUHENGDINGLVSHUODESHINENGLIANGKEYICONGYIZHONGXINGSHIBIANHUADAOLINGYIZHONGXINGSHI,DANSHINENGLIANGCONGLAIMEIYOUBEICHUANGZAOHUOHUIMIE。ZAIYIDIANCHUCHANSHENGDENENGLIANGBIRANDOUHUIZAIMOUYICHUXIAOSAN。

XITONGDEXIAOLVSHIYONGLAIHENGLIANGYOUXIAOSHUCHUNENGLIANGZHANZONGDESHURUNENGLIANGDEBIZHONG;XIAOLVYUEGAODEXITONG,JIUSHUOMINGYUEDUODENENGLIANGYONGYUZUOYOUYONGGONG,XIANGFANSUNSHIDENENGLIANGYEJIUYUESHAO。

篮球比分HAOLE,XIANZAIWOMENHUIDAOWOMENJINTIANDEZHUJIAO,YEYAXITONG;YEYAXITONGRUGUOSHEJIHELI,QIENENGDEDAOHENHAODEWEIHU,SHIKEYIDADAOHENGAODEXIAOLVDE。

2、LI

WOMENXIANJUYIGELIZI:

YILIANGHUOCHE,YIFEICHANGKUAIDESUDUXIANGXIXINGSHI。

篮球比分TURAN,HUOCHEZHUANGSHANGLEYIKUAIJUSHI,WODETIANNA。

EEE,BIEDANXIN,MEIYOURENYUANSHANGWANG!

篮球比分QISHI,NIXUYAOKAOLVDEZHISHIXIAMIANLIANGGEWENTI:

1、JUSHIHUIHEQUHECONGNI?

JUSHIHUIKAISHIXIANGXIYUNDONG,YINWEIHUOCHESHIXIANGXITUITADE。

JUSHIFASHENGLEYUNDONG,SHUOMINGTACONGHUOCHESHANGHUODELEDONGNENG。

2、HUOCHEHUIFASHENMEBIANHUA?

篮球比分HUOCHEDEYUNDONGHUIJIANMAN,YINWEITABAYIBUFENGDONGNENGGEILESHITOU。

DANGFASHENGPENGZHUANGSHI,HUOCHEDUIJUSHISHIJIALEYIGELI。JIHUOCHESHANGDEYIBUFENNENGLIANGCHUANDIDAOLESHITOUSHANG,SUOYISHITOUFASHENGLEYIDONG。

NEIME,LIJIUJINGSHIZHISHENMENI?TASHILIANGWUTIJIECHUHOU,FASHENGDEYIZHONGXIANGHUZUOYONG,ZHEZHONGZUOYONGNENGSHILIANGZHEFASHENGXIANGDUIDEYUNDONG。

WOMENZUISHUXIDELIMOGUOYUZHONGLILE。NIDESHENTISHOUDAOZHONGLIDEZUOYONGERTUOZHUAINIXIANGDIXINYUNDONG。RUGUONITIAODAOKONGZHONG,ZHONGLIHUIZHONGXINBANIZHUAIHUIDIMIAN。

LIJIJIKEYISHIWUTIYANMOUYITIAOZHIXIANYUNDONG,YEKEYISHIWUTIRAOMOUYIGEZHONGXINZHUANDONG。TU7WEIZHIXIANLIDUOZHONGLIKEYITONGSHISHIJIAZAIYIGEWUTIZHISHANG。ZAITU9SUOSHIDECHANCHESHANG,YOUDUOGELISHIJIAZAISHANGXIAYUNDONGDEXIANGZISHANG。DAODIYOUJIGELINI?DAJIAKEYISIKAOYIXIA。

篮球比分SHOUXIAN,ZHONGLIYONGYUANSHIJIANGZHONGWUZHUAIXIANGDIMIANDE,JIBIANZHONGWUZAIXIANGSHANGYUNDONGDEGUOCHENGZHONGYESHIRUCI。

篮球比分QIER,MOCALIZONGSHIQIJIANMANWUTIYUNDONGDEZUOYONG,TACONGWUTIZHONGHUOQUDONGNENG,BINGZHUANHUAWEIREHEZAOSHENG,ZUOLEWUYONGGONG。

篮球比分LINGWAI,YALIYETONGYANGSHIYIZHONGLI。DANGYEYAYOUHUOZHESHIYASUOQITIBEIYASUOSHI,TAMENZISHENJIUCUNCHULEDALIANGDENENGLIANG。DANGYALIDEDAOSHIFANGSHI,YOUYEHUOYASUOKONGQIZHONGCUNCHUDENENGLIANG,JIUHUIGENSUIJIEZHIYIQILIUDONG,ZHEXIENENGLIANGKEYITISHENGZHONGWUHUOZHESHIZHONGWUXIAJIANG。JISHIWUTICHUYUJINGZHIZHUANGTAI,DANZHEBUDAIBIAOMEIYOULIZUOYONGYUTA,DANGRAN,RUGUOYIGEWUTIJINGZHIBUDONG,HUOZHEYIYUNSUYUNDONG,NEIMEZUOYONGYUGAIWUTISHANGDESUOYOULISHIPINGHENGDE。

RUGUOYIGEWUTICHUZAIJIASUYUNDONGHUOZHESHIJIANSUYUNDONG,YIHUOSHIYUNDONGFANGXIANGFASHENGGAIBIANDEGUOCHENGZHONG,NEIMEZUOYONGYUGAIWUTISHANGDELISHIBUPINGHENGDE。

WEILEQIUJIEZUOYONGYUWUTISHANGDELI,NIXUYAOZHIDAOXIAMIANLIANGJIANSHI。

ZHILIANG——NIXUYAOZHIDAOGAIWUTIDEGOUCHENGCHENGFEN。

篮球比分JIASUDU——YOUYULIDEZUOYONG,GAIWUTIZAIJIASUHUOJIANSUSHISUDUBIANHUADEKUAIMAN。

JUGELIZI,WOMENCONGFEIJISHANGRENGXIAYIGEZHILIANGWEI2500kgDEZHONGWU,RUTU11SUOSHI。YOUYUSHOUDAOZHONGLIDEZUOYONG,ZHEGEWUTIHUIYI9.81m/s2DEJIASUDUXIANGXIAJIASUYUNDONG。SHIJIAYUGAIWUTISHANGDEZHONGLIDAODISHIDUOSHAONI?WOMENKANXIAMIANDEJISUAN。LI = ZHILIANG x JIASUDU,SHUXUESHIWEIF=ma

篮球比分F = 2500 kg x 9.81 m/s2

篮球比分F = 24525 kg·m/s2

篮球比分F = 24525 N

篮球比分WOMENJIXUWANGXIAKAN,NIUDUNSHIHENGLIANGLIDAXIAODEDANWEI。BIAOSHIZHEGELINENGGAIBIANMOUYIZHILIANGKUAIDEYUNDONG(JIASU、JIANSU、YUNDONGFANGXIANGDEGAIBIAN)DEKUAIMANCHENGDU

RUGUONIXIANGKUAISUGAIBIANZHILIANGWEI100kgDEWUTIDESUDU,NEIJIUXUYAODUIQISHIJIAHENDADELI。

RUGUONIXIANGKUAISUGAIBIANZHILIANG10kgDEWUTIDESUDU,NEIJIUXUYAODUIQISHIJIAZHONGDENGDELI。

RUGUONIXIANGMANMANDI、ZHUJIANDIGAIBIANZHILIANG100kgDEWUTIDESUDU,NEIJIUXUYAODUIQISHIJIAZHONGDENGDELI。

RUGUONIXIANGMANMANDI、ZHUJIANDIGAIBIANZHILIANG10kgDEWUTIDESUDU,NEIJIUXUYAODUIQISHIJIAHENXIAODELI。

3、LIJU

篮球比分LIJUSHIYONGLAIHENGLIANGXUANZHUANLIDEDAXIAODEWULILIANG。

YOUHENDUOFANGFAKEYICHANSHENGXUANZHUANLI。ZUICHANGJIANDEJIUSHIRUTU12SUOSHI,NIYONGLAOHUQIANQUNINGLUOSHUANLE。

篮球比分WEILEJISUANCHUTU12ZHONGDELIJU,WOMENXUYAOJISUANCHUSHIJIAGEIBANSHOUDEHELIDEDAXIAO,YIJILIBEIDECHANGDU。

TU12

TIHUANGAOQINGDATU

LIJU = LI x LIBEI

LIJU = 15 newtons x 0.2 meters

LIJU = 3 newton-meters(Nm)

篮球比分ZONGSHANG,SHIJIAYULAOHUQIANSHANGDELIJUSHI3Nm。JIZHU,LIJUDEDANWEISHINm。

4、GONG

DANGLISHIJIAYUMOUYIWUTISHI,WUTIHUIGAIBIANQIYUANXIANDEYUNDONGZHUANGTAI,YUCITONGSHI,GAIWUTIHUIDEDAOHUOSUNSHIYIBUFENNENGLIANG。WEILEHENGLIANGZHEBUFENNENGLIANGDEDAXIAO,WOMENYINRUGONGDEGAINIAN。

RUGUOLIZUOYONGYUWUTIZHISHANG,BINGMEIYOUGAIBIANWUTIDEYUNDONGZHUANGTAI,NEIJIUSHUOMINGMEIYOUFASHENGNENGLIANGDECHUANDI,YEJIUSHIGAILIMEIYOUDUIWUTIZUOGONG。KANKANTU13NENGGEINISHENMEQIFA?

篮球比分XIANGYAOJISUANCHUGONGDEDAXIAO,NIBIXUZHIDAOYIXIALIANGGELIANG:

LIDEDAXIAO

WUTIYUNDONGDEJULI

RANGWOMENJUGELIZI,RUTU14SUOSHI,XIANGSHANGJUSHENG15kgDEZHILIANGKUAIDAO4MIGAODEWEIZHI。WEILESHIMIAOSHUJIANDAN,WOMENQUZHONGLIJIASUDUDEZHIWEI10m/s2

TU14

LIF = ZHILIANGm x JIASUDUa

篮球比分F = 15kg x 10 m/s2

F = 150 newtons

GONGW = LIF x JULIS

W = 150 newtons x 4 meters

篮球比分W = 600 joules

GONGDEDANWEISHIJIAOERJ。1JSHIZHI1NDELISHIJIAYUZHILIANGKUAISHANG,SHIZHILIANGKUAIYIDONG1mSUOZUODEGONG。

SUIRANWOMENYONGJIAOERLAIHENGLIANGLIDUIWUTIZUODEGONG,DANSHIJIAOERYETONGYANGKEYIBIAOSHIWUTISUOYUNHANDENENGLIANGDEDAXIAO。JIUBIRU,SHIWU、RANLIAOQIYOUDENGSUOHANDENENGLIANGWOMENDOUYONGJIAOERBIAOSHI。QISHILIANGZHEBINGBUMAODUN,YINWEILIDUIWUTIZUOGONG,YESHIWUTIZHONGNENGLIANGDEXIANGHUCHUANDIDEGUOCHENG。

5、GONGLV

GONGLVSHIZHIDANWEISHIJIANNEILIDUIWUTISUOZUODEGONG。TADEDANWEISHIJ/s,YESHIWOMENSUOSHUZHIDEWATEw。

WATEZHEGEDANWEISHIYIZHENGQIJIDEFAMINGZHEJames WattDEMINGZILAIMINGMINGDE,XIAMIANFANGYIZHANGWEIRENDETOUXIANG,GONGDAJIAMOBAI。

1, energy

篮球比分Energy in real life is an invisible, intangible thing. It's just a term we use to describe the nature of an object, like color or warmth.

Let's start with some examples of what has energy:

篮球比分A fast moving object has greater kinetic energy;

A hot body has heat energy;

Fuels such as gasoline have chemical energy;

篮球比分Moving electrons have electrical and electromagnetic energy.

When we say that an object has energy, we mainly focus on the following two points:

篮球比分What will the energy cause to happen to the object itself?

How does energy change things around, that is, how does energy travel?

篮球比分As we said before, energy is not something that you can actually see or touch, so it's hard to draw. But if you look at figure 1, if you click on the GIF, you're applying some kinetic energy to it.

In conclusion, we know that energy can be transferred between different objects. See figures 2 and 3 for a good illustration of this.

When energy is transferred between objects, some energy must be lost in the process, mainly due to resistance such as friction.

We call them losses because they're not doing what we want them to do. That is, no useful work, do is useless.

篮球比分In an automobile engine, for example, when chemical energy is converted from gasoline to kinetic energy, some of it is lost in the form of heat and noise.

The perfect engine is cold to the touch and completely silent. But no system in the world is so perfect. All the energy conversion systems we see in life have energy losses.

篮球比分Because of the friction loss, we can conclude that the effective output energy is always less than the input energy. Figure 5 gives a good illustration of this conclusion.

But if you add in the energy lost, then the energy must be conserved, which is that the input energy is equal to the effective output energy plus the lost energy. As shown in the following formula.

Energy input = energy output + energy loss

The law of conservation of energy says that energy can change from one form to another, but it is never created or destroyed. Whatever energy is produced at one point must dissipate somewhere.

The efficiency of the system is used to measure the proportion of the effective output energy in the total input energy. The more efficient the system, the more energy it USES for useful work, and the less energy it loses.

All right, now let's go back to our main character of the day, the hydraulic system; Hydraulic system can achieve high efficiency if it is designed properly and maintained well.

2,

Let's start with an example:

A train, travelling at a very fast speed to the west.

篮球比分Suddenly, the train hit a boulder. Oh, my god.

No casualties!

篮球比分In fact, you only need to consider the following two questions:

1. Where will the boulder go?

The boulder would start moving west because the train was pushing it west.

The boulder moved, indicating that it had gained kinetic energy from the train.

2. What will happen to the train?

篮球比分The motion of the train slows down because it gives a kinetic energy of wind to the stone.

篮球比分When the collision occurred, the train exerted a force on the boulder. That is, some of the energy on the train was transferred to the rock, so the rock moved.

篮球比分What, then, is a force? It is an interaction between two objects that comes into contact and causes them to move relative to each other.

篮球比分The most familiar force is gravity. Your body is pulled towards the center of the earth by gravity. If you jump into the air, gravity will pull you back to the ground.

A force causes a body to move either in a straight line or around a center. Figure 7 shows linear forces. Multiple forces can be applied to an object at the same time. In the forklift shown in figure 9, multiple forces are applied to the box as it moves up and down. How many forces are there? Think about it.

First, gravity always pulls a weight toward the ground, even when it's moving upwards.

篮球比分Second, friction always ACTS to slow down the motion of the body. It takes kinetic energy from the body and converts it into heat and noise.

篮球比分In addition, pressure is also a force. When hydraulic oils or compressed gases are compressed, they store a lot of energy in themselves. When pressure is released, energy stored in the oil or compressed air flows with the medium, lifting or lowering heavy objects. Even if a body is at rest, it does not mean that there is no force acting on it. Of course, if a body is at rest or moving at a constant speed, the force acting on that body is balanced.

篮球比分If an object is in accelerated or decelerated motion, or the direction of motion is changed, the force on the object is unbalanced.

篮球比分To solve for the force on an object, you need to know two things.

Mass -- you need to know what the object is made of.

篮球比分Acceleration - the rate at which a body's speed changes as it accelerates or decelerates due to a force.

篮球比分For example, we drop a weight of 2500kg from an aircraft, as shown in figure 11. Due to the force of gravity, the object will accelerate downward at an acceleration of 9.81m/s2. What is the force of gravity on the object? Let's look at the following calculation. Force = mass x acceleration, and the mathematical formula is F=ma

篮球比分F = 2500 kg x 9.81 m/s2

篮球比分F = 24525 kg · m/s2

F = 24525 N

篮球比分Let's move on. Newton is a unit of force. Indicates how quickly this force can change the motion (acceleration, deceleration, change in direction) of a mass

If you want to change the speed of something that has a mass of 100 kilograms very quickly, you have to apply a lot of force to it.

篮球比分If you want to change the speed of a 10kg mass very quickly, you need to apply a moderate force to it.

篮球比分If you want to change the speed of a 100kg object slowly and gradually, you need to apply a moderate force to it.

If you want to change the speed of a 10 kilogram mass slowly and gradually, you need to apply a very small force to it.

3, moment

Torque is a physical quantity used to measure the rotational force.

篮球比分There are many ways to generate rotational forces. The most common is shown in figure 12, where you use a vise to turn the bolt.

To calculate the torque in figure 12, we need to calculate the resultant force applied to the wrench and the length of the moment arm.

Figure 12

Replace the hd image

Torque is equal to force x moment arm

Torque = 15 newtons x 0.2 meters

篮球比分Torque = 3 newton-meters (Nm)

篮球比分So the torque applied to the vise is 3Nm. Remember, the units of torque are nanometers.

4, work

篮球比分When a force is applied to a body, the body will change its original motion state, and at the same time, the body will gain or lose some energy. To measure the magnitude of this energy, we introduce the concept of work.

If a force is applied to an object and does not change its motion, then no energy has been transferred, that is, no work has been done on the object. What does figure 13 tell you?

篮球比分To calculate the amount of work, you must know two things:

The size of the force

The distance an object travels

Let's take an example, as shown in figure 14, of lifting a mass block of 15 kilograms up to a height of 4 meters. For simplicity, let's take the acceleration of gravity as 10 meters per second

Figure 14

Force F is equal to mass m x acceleration a

F = 15kg x 10 m/s2

F = 150 newtons

篮球比分Work W = force F x distance S

W = 150 newtons x 4 meters

篮球比分W = 600 joules

The unit of work is joule J. 1 joule is the work done by a force of 1N applied to the mass, making it move 1 meter.

Although we use joules to measure the work done by a force on an object, joules can also indicate the amount of energy contained in an object. For example, the amount of energy in food, fuel, gasoline, etc., is expressed in joules. The two aren't contradictory, because work done by a force on a body is also the transfer of energy between bodies.

5, power

篮球比分Power is the work done by a force on an object per unit of time. It's in J/s, which is also known as watt w.

篮球比分Watt is named after James Watt, the inventor of the steam engine, and here is a head of a great man for you to admire.


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