Kim Seung Yeon
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does a tone know how to do MECHANICS 2 IAL 2017 JUNE paper? Please help with number 5 😭😭😭
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Kim Seung Yeon
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old_engineer
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The particle becomes a projectile under the influence of gravity (and nothing else) at the instant it passes point B. You will need to determine the horizontal and vertical components of the particle's velocity at B. Thereafter it's a projectile question, albeit you can use conservation of energy to help you in part (b).
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Kim Seung Yeon
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(Original post by old_engineer)
The particle becomes a projectile under the influence of gravity (and nothing else) at the instant it passes point B. You will need to determine the horizontal and vertical components of the particle's velocity at B. Thereafter it's a projectile question, albeit you can use conservation of energy to help you in part (b).
I did but somehow the answer is different from the marking scheme
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RDKGames
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(Original post by Kim Seung Yeon)
I did but somehow the answer is different from the marking scheme
What did you get ?
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Kim Seung Yeon
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(Original post by RDKGames)
What did you get ?
I probably got 4.2 or something
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RDKGames
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(Original post by Kim Seung Yeon)
I probably got 4.2 or something
You don't know what you got... ? And for which part of the question ?? Be clear if you're asking for help.
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Kim Seung Yeon
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(Original post by RDKGames)
You don't know what you got... ? And for which part....
for part b I got 4.2 for the speed
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RDKGames
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(Original post by Kim Seung Yeon)
for part b I got 4.2 for the speed
And your reasoning for that is ... ?
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Kim Seung Yeon
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(Original post by RDKGames)
And your reasoning for that is ... ?
the law of conservation of energy what else....
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RDKGames
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(Original post by Kim Seung Yeon)
the law of conservation of energy what else....
Well clearly you applied it incorrectly. So if you explain exactly how you got it then we'd be happy to help. We're not going to do this question and serve the answer on a plate for you if that's what you're expecting.
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Kim Seung Yeon
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(Original post by RDKGames)
Well clearly you applied it incorrectly. So if you explain exactly how you got it then we'd be happy to help. We're not going to do this question and serve the answer on a plate for you if that's what you're expecting.
I just used the ke + mgh at highest point = ke at lowest point , correct me if I'm wrong??
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RDKGames
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(Original post by Kim Seung Yeon)
I just used the ke + mgh at highest point = ke at lowest point , correct me if I'm wrong??
Sounds good to me. Obviously this is is also the KE at the start of the ramp which implies u and w are the same since they're on the same level and energy has been conserved throughout the entire motion up the ramp and projected off it.
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Kim Seung Yeon
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(Original post by RDKGames)
Sounds good to me. Obviously this is is also the KE at the start of the ramp which implies u and w are the same since they're on the same level and energy has been conserved throughout the entire motion up the ramp and projected off it.
so is u=w??
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Kim Seung Yeon
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(Original post by rdkgames)
sounds good to me. Obviously this is is also the ke at the start of the ramp which implies u and w are the same since they're on the same level and energy has been conserved throughout the entire motion up the ramp and projected off it.
thank you so much i understood now
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