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
                   

2 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

2 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