ICSE − Q & A

hindi was really bad by the way is Hindi always counted in ""best of 5"" I am not getting proper information on the net...if any of you could shed light it would be of gr8 help

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 lot😁

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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-
वो तो सिर्फ अभी झाकी हैं ,
अच्छे पेपर तो होना बाकी हैं ।
LETS PAYBACK OUR PARENTS.

+ 1 more questions by abhinav07kumar  

paper didn't go well for getting 97+ marks. but at the last----:) YEARS AND MILES WILL TAKE US AWAY, LEST I WILL NOT FORGET MY HINDI DAYS. hindi periods in which i used sleep or do other subject work. RIP HINDI i will miss those periods. now i am getting emotional :( thats all.
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The kinetic energy of the bob at its mean position is 20 J. Find the gravitational potential energy at the extreme position when 0.5 % of it is dissipated during the transit
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In physics, is the definitions of all the energy changes and definitions of all energy there? (chapter 2)

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Guys now plz don't talk about the paper xD