- #36
Satvik Pandey
- 591
- 12
Thank you.TSny said:Yes, I think so. Good..
TSny said:Check the sign of C.
I got that.It should be -3g/2.
Please tell me what to do next?
Thank you.TSny said:Yes, I think so. Good..
TSny said:Check the sign of C.
Satvik Pandey said:Thank you.
I got that.It should be -3g/2.
Please tell me what to do next?
ehild said:The C is no correct yet.
ehild
ehild said:You have got a calculator, don't you? And there is pi on it, and you can calculate the value of an exponential function. Maybe, with inverse ln (shift ln).
And your formula is wrong, r is missing and why is 4 in the denominator of the second term?
ehild
Satvik Pandey said:I substituted r=2.It was given in the question.
Is epi/2=11.5703463164?
ehild said:In the question, r was given as 200 cm.
You need e-pi/2.
Satvik Pandey said:ω2=[itex]\frac{9.8}{4}[/itex]-[itex]\frac{29.4}{4}e^{-\pi/2}[/itex]
I found e[itex]^{-\pi/2}[/itex]=0.0216
On putting values I found I found ω=1.5136
As V=rω
So V=3.02136
S=1.05m
t=[itex]\sqrt{\frac{2S}{g}}[/itex]=0.429
Velocity of block makes 90° with horizontal at the he point at which it leaves the wedge.
So vertical component of V is 0.
So x=Vt=1.40m=140cm.
ehild said:It is correct in principle, but the numerical values are not. [itex]e^{-\pi/2}=0.20788 [/itex]
How did you get 0.0216? You forgot the parentheses and calculated ##e^{-\pi}/2##?
ehild
Oh! my typing mistakes. When would they end.ehild said:Also, t=0.4629 s instead of 0.429,
and v makes 0° angle with the horizontal, instead of 90° but these are typos.
ehild
ehild said:The problem was far above high-school level, you needed knowledge about differential equations.
You solved it at the end, congratulation, but it would be more useful for you to practice on problems which are more elementary.
ehild
I will follow your suggestion.ehild said:it would be more useful for you to practice on problems which are more elementary
Satvik Pandey said:How did you find that I am in high-school?.
ehild said:I saw your Profile
You become a real scientist if you understand what you do. Maths and Physics are not mere collections of recipes. You have to start from the bases and build up your knowledge step by step. Every step must follow logically from your previous knowledge, and then you would feel a new theorem or proof easy as if you could have discovered them by yourself.
ehild