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Gravity. Your views

Please drop in your comments in this note based on your view about my set GRAVITY.

You are most welcome to give suggestions to improve my questions..................

Note by Sravanth Chebrolu
1 year, 11 months ago

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@Sravanth Chebrolu Thanks,A very nice set.
I really enjoyed solving your questions,i solved all the questions,feeling awsome. Looking for more sets by you.Keep posting. Akhil Bansal · 1 year, 4 months ago

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The problem " Gravity Niagara Falls This Time " has the exact answer 526588.2353 kg(per minute). Because, mgh = (5000)(746)(100/85)(60). As you've said g=10 & h=50, we get m= 526588.2353 kg(per minute). Your answer is 527000. Why? It is a Bit Far from the exact answer. If we post the answer to the nearest integer, the answer is very clearly 526588 kg(per minute). Kindly tell, where am I wrong? Shouldn't the answer be more exact? Kindly notice this. I hope you will also get the answer 526588 kg(per minute), NOT 527000 which is far away from the correct one. Rubayet Tusher · 1 year, 9 months ago

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@Rubayet Tusher Thanks for writing in sir! I am extremely sorry for not mentioning to round off your answer, it is my mistake.

I'm sorry for my mistake, please reply and give your views Sravanth Chebrolu · 1 year, 9 months ago

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@Sravanth Chebrolu No problem. No need to sorry ... That happens ....... After all, we all are human .... And, please never call me Sir ... I am just a student like you and learning new things regularly ..... By the way, your this set "GRAVITY" was really creative and praiseworthy... Please keep on posting problems like this in future ! Thanks a lot for your knowledge sharing ..... Rubayet Tusher · 1 year, 9 months ago

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@Rubayet Tusher Thank you, very much I respect your comment sincerely, thanks for liking my set and forgiving me.

The question in discussion was posted long before when I was very new to this website and committed such mistake, in future I hope I will not do such things, thank you! Sravanth Chebrolu · 1 year, 9 months ago

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The question named Gravity slope forces has incorrect answer. Work done by force will be equal to change in potential energy. hence 1 + 2 will be 2mglsin30... please correct me if i am incorrect somewhere Ťånåy Nårshånå · 1 year, 9 months ago

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@Ťånåy Nårshånå The mistake you've done is, you've missed out the "Friction" Case into calculation. We know, "mu"=tan(theta). So, "mu" becomes tan(30)=(1/sqrt3). Then the WORK for lifting up the block will be ((98+98)(3))=588 Joules Itself. Then, as we have lifted the block up a HEIGHT of (3/2), So, the increase in it's potential energy will be mg(3/2)=294 Joules. Then The sum becomes 588+294=882 Joules which is the correct answer. Rubayet Tusher · 1 year, 9 months ago

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@Rubayet Tusher but mu=tantheta is only valid when it is the limiting case of sliding. Please refer standard texts. Also there is not mention of friction in the question. Ťånåy Nårshånå · 1 year, 9 months ago

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@Ťånåy Nårshånå Please see my solution for the same. Sravanth Chebrolu · 1 year, 9 months ago

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They are amazing...... I learnt a lot about gravity and the twists in the questions. They are quite brain teasing also !! Well..... What else can I say. The questions are as brilliant and amazing as the same way u are.... Skanda Prasad · 1 year, 11 months ago

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@Skanda Prasad well, thank you Skanda................ Any suggestions???????????? Sravanth Chebrolu · 1 year, 11 months ago

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