1thanks for replying...
but then we'll have 2 equations, & 3 variables( initial V, final V, final _l_ distance)
where am i wrong... please tell..
find the min. velocity with which an object must be projected horizontally so that it doesen't returns back to the surface
acc to this link{ques c]}, ans shud be root [gr]
http://www.targetiit.com/iit-jee-forum/posts/interesting-kinematics-17278.html
but i believe it shud be root [2gr] only,
by conservation of energy{ as theres no role of angle of projection in it}
please confirm
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4 Answers
11No seoni < plays a role here.At the moment the projectile turns back its velocity is not zero!! We need to apply both conservation of energy and angular momentum...
1
62think of it in terms of graviational potential energy...
that will be much easier..
There you will not have to worry about horizontal/. vertical speed...
also you will not have to worry about changing gravitational field...