Recent content by vadbol

Thanks , now i got it. :)

Ok, thanks for reply. But to solve it using momentum approach i took velocity of balk and a bullet after collision which i got using the very energy equation. So if the energy is not saved totally as you say how can we use that velocity of balk to calculate velocity of bullet? I mean when the...

Homework Statement A bullet hits balk of 5kg on a rope of 2m lenths. Bullets mass 2gr, velocity unknown. Plastic collission, balk goes upat 45 degrees. Homework Equations When i solve it with energy equations i get h=2-2cos45=0.58m V(of balk and bullet) = sqrt(2gh)=3.38 m/s...