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Guys help me with this-

A block and tackle system of 5 pulleys is used to raise a load of 500 N steadily through a height of 20cm. The work done against friction is 2000 J. Calculate:
1) Work done by effort 
2) Efficiency Of system
3) Displacement of the effort applied
4) M.A and V.R

Answers-
1)12000J 
2)83.3%
3)120 N
4) 4.17 and 5

Thanks a lotЁЯШБ
asked by Prateek Mukherjee (prat172) 6 years ago
3
What should be written in definition of centripetal and centrifugal force in exact words.
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Breaking news... Stephen Hawking died
asked by Darth Vader (aj87) 6 years ago
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I wrote a one and a half page essay. What is the minimum marks i can get in that?
asked by Rishab Katakia (pringles0403) 6 years ago
2
here is an self made poem. which i made as tribute to hindi-read till the last
if you liked it then good otherwise don't abuse me. here we go....

bhul jao sab kuch, bas bache hain do vishay  computer aur vigyan.
laga denge hum isme hum apni jaan.
aisa finish karenge boards ko,
ki finisher dhoni ka bhi ho jae apman,
abhi puri india ko jalana hai,
india topper banke jo dikhana hai,
jeetna toh apni kala hai,
kismat to apni jeb mein pala hain,
dosto dar kis baat ki hain,
paper ab tak kharab huan ho ya accha-bas ye  bolo-
рд╡реЛ рддреЛ рд╕рд┐рд░реНрдл рдЕрднреА рдЭрд╛рдХреА рд╣реИрдВ ,
рдЕрдЪреНрдЫреЗ рдкреЗрдкрд░ рддреЛ рд╣реЛрдирд╛ рдмрд╛рдХреА рд╣реИрдВ ред
LETS PAYBACK OUR PARENTS.
asked by Naam_mein_kya_rakha_hai (abhinav07kumar) 6 years ago
14

+ 1 more questions by abhinav07kumar  

A radioactive 14C6 emits a beta particle and changes to nitrogen.
Give an equation to show the process.
What is the General name given to daughter and parent nuclei during the equation mentioned above.
asked by Tiara Elizabeth (thejtthomas) 6 years ago
3

+ 2 more questions by thejtthomas  

In physics, is the definitions of all the energy changes and definitions of all energy there? (chapter 2)
asked by Rohan Gupta (rohang37) 6 years ago
1
Pls tell me aasman se bath karna and hava se bath karna are not the same
asked by Jeff mckinley (chende) 6 years ago
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Guys now plz don't talk about the paper xD
asked by Vegito SSG (mustafa53) 6 years ago
1
рджрд┐рдирд╛рдВрдХ:..... рдкреНрд░рд┐рдп рдЕрдиреБрдЬ

do we have to leave a line between these two?
asked by Karan Patrick (karan_dodo) 6 years ago
1

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