230 JOULE WERE SPENT IN LIFTING A 10 KG WEIGHT TO A HEIGHT 2 m .CALCULATE THE ACCELERATION WITH WHICH IT WAS RAISED .TAKE g=10m/s2
                   

3 years ago

Share

Answers : (1)

                                        

by conservation of energy,


the energy spent in doing the work=change in ke + change in pe


therefore, 230=10 x 2 x 2  + 0.5 x 10 x v2


230=40+5v2


v2=190/5


=38m/s


now,v2=2as


a=38/4


=9.5 m /s2

3 years ago

Post Your Answer

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
Hello sir i have scored 81%in A.P.board exams how many marks should i get in jeemains2015?
 
 
To have a good rank in JEE-Main, you should have atleast >280 marks. Actually there is a criteria of 60 % of Jee Main along with 40% of +2. So, do hard and find out the previous years JEE...
  img
Saurabh Kumar one month ago
 
Correponding to your marks in A.P. Board. JEE Main Rank:-23000-28000 (JEE Main Score -200) JEE Main Rank-42000-52000 (JEE Main Score-150) These are the few distributions. If you want to the...
  img
Aziz Alam one month ago
lim (e^x +e^-x+2cosx -4)x^4 x-0
 
 
Ans: Hello Student, Please find answer to your question below It is zero by zero from. Use L’Hospital rule
  img
Jitender Singh 4 months ago
 
its very simple.write all the expressionss.and get 1/6
 
Abhishek Pachauri 4 months ago
did pwd candidate also should be in top 20 percentile of his board to qualify for jee advanced.
 
 
No Pwd candidates have been given relaxation by the commission for top 20 percentile. ______________________________________________ ______________________________________________...
  img
Amit Shekhar 3 months ago
Plz explain Assembler , Compiler, interperter, nonprocedural language, structured software and object oriented software??
 
 
Assembler- A computer program that takes computer instructions and converts them into a pattern of bits that the computer can understand and perform by it certain operations. Compiler- This...
  img
Navjyot Kalra 5 years ago
my rank is 150000 . i belong to general category . is there a chance of getting uiet chandigarh in girl quota ?
 
 
The link below is IIT JEE Main Branch and College Predictor.You can use it to get the answer to your query. http://www.askiitians.com/iit-jee/main/college-branch-predictor.html Please use...
  img
Aziz Alam 5 months ago
i have got 284 in bits 2014 and the first round cutoff is 299 while waiting list cutoff is 272 and i have been placed in the waiting list.there ia a need to send 20% of the semester fee to...
 
 
Going by the previous year cutoff for various branches in these three different BITS campus and also taking into the consideration this year’s1stround cutoff (admission and waiting...
  img
Aziz Alam 5 months ago
View all Questions »