No, no, we don't ignore the y comp of accn. There is, in fact, only the y comp of accn, as in projectile motion. I said there is no y comp of velo initially.So we ignore gravity and assume that the rock just travels in a straight line (60 from the vertical) and hits the ground?
can you explain this part pleaseThe intriguing part is that the result is independent of g. The reason is that it’s a given condition that the vine breaks if the angle with the vertical is 60 deg. That may be true if the g is as on earth, but otherwise such a given condition is unphysical.
No. NO. NO. The mass starts to gain velo in the -ve y direction, because of g acting downward, but initially the y comp of velo is zero.this is as soon as the vine breaks, there is initial velocity in y-direction