A Conversation Between Pablo Picasso and Leonardo da Vinci.

Hello guys, actually this dialogue for my English task. But I feel very excited to make this dialogue. Imagine that you invited two famous people to your home for dinner last night. Certaunly, I will invite Picasso and Leonardo. They're amazing painter of their time. I enjoy to make it because Pablo Picasso and Leonarno da Vinci are my idol. It is pure from my imagination. Yeah, but there are some dialogue I take from this site >> http://whimquarterly.com/conversation-pieces/a-conversation-between-pablo-picasso-and-norman-rockwell-two-painters-i-know-very-little-about <<


( In one night on my dinner party )

Picasso       : Hi How are you Mr. Leonardo?
Leonardo    : I’m totally fine. How about you Picasso?
Picasso       : Yeah, as you see. I’m good. And how about you Miss? Thanks for invited us to your dinner. I finally can meet my idol Mr. Leonardo.
Me             : I’m fine too, thank you for your attending, Sir. I hope you enjoy this dinner.
Leonardo   : Are you sure with your word, Picasso?
Picasso       : What?
Leonardo    : No. Forget it.
Picasso       : Hahaha. You’re too serious Mr. Leonardo. Yeah I admire all of your realism   painting, especially Mona Lisa. Even, It is more famous than me. Haha.  
Me             : I’m sorry Mr. Picasso. How about your painting?
Picasso      : What’s wrong with my painting?
Leonardo   : Remember that blue period thing? And then you always paint human figures with weird faces. You change the perception people of beauty of art.
Picasso      : Yes, you paint things that are lot more normal, such as 12 people in The Last Supper and spend your 7 years to paint it. Such important paintings.
Leonardo   : Are you being sarcastic?
Picasso       : No, no at all. I’ve said before that I’m your admirer. I love all of your painting. You have depicted the consternation that occurred among the Twelve Disciples when Jesus announced that one of them would betray him. That is amazing painting.
Leonardo    : The Last Supper was commissioned as part of a plan of renovations to the church and its convent buildings. You know what man, my paintings made a lot of people happy.
Picasso       : I think that’s great.
Me             : Guernica is a thing you did that is impressive.
Picasso       : It was big.
Me             : It had to do with the Spanish Civil War?
Picasso       : It did.
Me             : This is because you are Spanish?
Picasso       : Yes, this is likely because I am Spanish.
Leonardo    : Picasso, Did you know? I admire your painting too.
Picasso       : What? Are you really?
Leonardo    : Yes. You’re genius. I love The Blue Room painting. Nice work Picasso!
Picasso       : *speechless*   
Leonardo    : That is not normal painting.
Picasso       :  How do you know?
Leonardo    : Texture of brush strokes that do not fit with the image visible.
Picasso       : You’re more genius Mr. Leonardo! I admire you so much! Sst..this is our secret. Haha.
Me             : Wow, I never think like that. Thanks God. I can meet the famous and genius painters like them. I hope two of you can make painting together. All of you are my idol painter! I want to be a painter like you!
Leonardo   : In this world there’s no miracle. If you want to make an amazing work. Keep practice. Try and always try! Make something different. So, you will find your own miracle.
Me            : Nice words Mr. Leonardo! I will remember that!
Picasso     : And don’t forget “always love what you do and do what you love.”
Me            : I hope I can invite a lot of painter around the world and make random conversation like this. This very interesting!
Leonardo  : Sure. Why not? I will come.
Picasso      : Yeah, me too.

Usaha dan Energi

Usaha menyatakan hubungan antara gaya dan energi. Sedangkan Energi menyatakan kemampuan melakukan usaha.

Usaha merupakan besaran Skalar.

Usaha (W) yang dilakukan oleh gaya konstan pada sebuah benda didefinisikan sebagai perkalian antara komponen gaya (F) sepanjang arah perpindahan dengan besarnya perpindahan (S).

W  = (F cosθ )∆s

Usaha tidak memberikan informasi tentang:

• Waktu yang diperlukan untuk terjadinya perpindahan, dan
•  kecepatan atau percepatan benda.

Usaha akan bernilai nol ketika:

• Tidak ada perpindahan
• Gaya dan perpindahan saling tegak lurus, sehingga cos 90° = 0 (jika kita membawa ember secara horisontal, gaya gravitasi tidak melakukan kerja).

 Satuan Usaha

Energi kinetik

 
Kemampuan benda untuk melakukan usaha karena bergerak. Jika benda bermassa m dan berkecepatan v, maka energi kinetik translasinya:

EK = ½ mv² Joule

Teorema Usaha-Energi Kinetik

Ketika usaha dilakukan oleh gaya neto pada sebuah benda dan benda hanya mengalami perubahan laju, usaha yang dilakukan sama dengan perubahan energi kinetik benda.

• Laju akan bertambah jika kerja positif.
• Laju akan berkurang jika kerja negatif

Energi Potensial Gravitasi
Energi potensial gravitasi adalah: kemampuan suatu benda melakukan usaha karena kedudukannya dalam medan gravitasi.

Jika benda m jatuh sejauh h, maka benda tersebut melakukan usaha sebesar = mgh.

Usaha dan Energi Potensial Gravitasi

 
Tinjau sebuah buku bermassa m pada ketinggian awal y1.

Kekekalan Energi

Energi mekanik total adalah jumlah dari energi kinetik dan energi potensial sistem.

Daya

• Daya didefinisikan sebagai laju transfer (aliran) energi. 
• Daya merupakan cepatnya usaha yang dilakukan.   
• Satuan daya adalah Watt dimana 1 watt = 1 J/s atau satuan lain yang biasa dipakai adalah tenaga kuda. (1 hp = 746 w).

Daya sesaat

P = Fs.V atau P = F.V 

dimana V adalah kecepatan sesaat.

source:
http://file.upi.edu/Direktori/FPMIPA/JUR._PEND._FISIKA/197705012001122-LINA_AVIYANTI/5._usaha_dan_energi.pdf