The problem involves a boy sliding down a water chute, starting from rest, and requires the calculation of his speed at two points: the end of the chute and upon entering the water. The context includes considerations of energy principles and projectile motion.
The discussion is ongoing, with participants providing insights into the use of different methods, such as energy considerations and projectile motion. Some guidance has been offered regarding the treatment of the boy's motion and the relevance of angles in the calculations, but no consensus has been reached.
There are mentions of potential round-off errors in calculations and the need for precision in decimal places. The problem's constraints include neglecting friction and the specific angles involved in the motion.
The answer is "No" if all you have to do is find the speed at C. You would if you had to find the time he sails through the air.Alexanddros81 said:
Yes.Alexanddros81 said:
Probably to show you that you can use energy considerations or projectile motion and get the same answer either way. Try it and see for yourself.Alexanddros81 said:
Yes, you must treat the boy as a projectile. The boy will have a horizontal velocity you calculated above and zero vertical velocity. Zero horizontal acceleration and gravity pulling downwards.Alexanddros81 said:
The launch speed as calculated by OP is 12.52 m/s. The velocity is directed at 30o above the horizontal and has both a vertical and a horizontal component.lekh2003 said:
Oh yes, sorry. I made a mistake.kuruman said:
I am sure it is round off errors. Also note that for part (b) you could have conserved energy directly from A to C and used ##U_{A \rightarrow C}=W(10~m)##.Alexanddros81 said:
