sebuah silinder besar bermasa $M_1$ dengan jari jari $ R$ dililit dengan tali tak bermasa dan ujung tali diikatkan sebuah benda bermasa $ M_o$. silinder besar diletakkan diatas track yang cukup kasar sehingga silinder bergerak tanpa slip.. Pertanyaan :

1. Apakan benda bermassa $ M_o$ akan mencapai titik kesetimabangan ?
2. Jika ya, Berapakah sudut yang dibentuk massa $ M_o $ pada saat itu ?

for homework

SMAK PENABUR GADING SERPONG

Jalan Raya Kelapa Gading Barat

Tangerang, Indonesia 12345

 

February 24th, 2009

 

SAT Indonesia Office

Jalan Blabla No.12345

Jakarta, Indonesia 54321

 

Dear Mr. Lbalba,

 

I am Theo Arianto from SMAK PENABUR Gading Serpong grade 11. I want to study abroad after I have finished my senior high school. I wonder how to apply for it.

 

I have heard about SAT Test, TOEFL test or something like that. What the requirements are for apply to study overseas? Is it late for me now to apply for it? Which are popular universities? I'm interested in physics especially pure physics. Which university that is quite good in physics and what is your advice for me.

 

Would you please give your response to me immediately? You can contact me at theo_arianto@hotmail.com. Thank you for your attention.

Sincerely yours,

 
Theo Arianto

 

from Lim Yung Kuo: 
for improving our english, so the problem will be in english 

N identical balls lie equally spaced in a semicircle on a frictionless horizontal 
table, as shown. The total mass of these balls is M. Another ball of mass m 
approaches the semicircle from the left, with the proper initial conditions so 
that it bounces (elastically) off all N balls and finally leaves the semicircle, 
heading directly to the left. 

(a) In the  (so the mass of each ball in the semicircle, goes to zero), find the minimum value of  that allows the incoming ball to come out heading directly to the left. 

(b) In the minimum  case found in part (a), show that the ratio of m’s final speed to initial speed equals  

if there are something unclear you can visit 

http://www.olimpiade.org/Forum/viewtopic.php?t=2317

there're also many cool problems ^^

I'm sorry. 

Douglas Osheroff ( with blue shirt )

Yuan Tseh Lee ( with batik )

Nelson tansu ( with blazer )

Photos and assigment

with Prof. Yuan Tseh Lee ( nobel laureates on

chemistry )

with Prof. Douglas Osheroff ( nobel laureates on 

physics)

Hi, my blog is for assigment from my english teacher in class.

Here are a few of my photos :

those are my photos at second asian science camp ( bali )

with Prof. Nelson Tansu