What is the solution to question 2 on energy conservation problems homework?

AI Thread Summary
The discussion focuses on solving question 2 of an energy conservation homework problem. The user attempted to apply the energy conservation rule, determining the speed as √2gh, but struggled with finding the angle after the object passes through. They noted that the parabola's equation, y=ax^2, is crucial for further calculations. By using the given point B at (2H, H), they can compute the value of a and find the slope at point B. The conversation emphasizes the importance of incorporating the parabola equation in the solution process.
Mzaa
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Homework Statement


https://www.img.in.th/image/VNYMHY
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This is my homework,but I have a problems with question no.2

Homework Equations

The Attempt at a Solution


I tried to used energy conservation rule to get that the speed is √2gh ,but I don't know how to know the angle after that passing through.
 
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The parabola has the form ## y=ax^2 ##. They give you that the point B is at ## (2H,H) ##. That will allow you to compute ## a ## and thereby get the slope at ## B ##.
 
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Thank you so much! I really forget to use parabola equation.
This is really helpful.
 
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