Recent content by Let'sthink

  1. Let'sthink

    I Work done by action reaction forces when they move things

    This is not my homework. I have already derived the expression. I am posting for the purpose of stimulating discussion to bring out fundamental difference difference between forces of constraint and forces of interaction which can be expression terms of distance between them.
  2. Let'sthink

    I Work done by action reaction forces when they move things

    What is the magnitude of reaction force still mg cos theta or different?
  3. Let'sthink

    I Work done by action reaction forces when they move things

    What is fundamental difference between forces of interaction between objects even from a distance and so called action reaction forces of constraint between two bodies in contact or constrained to be in contact?
  4. Let'sthink

    I Work done by action reaction forces when they move things

    Please first state what kind of motion do you expect for block of mass m and Incline of Mass M. Will reaction force be mg cos theta or will it be different?
  5. Let'sthink

    I Work done by action reaction forces when they move things

    Normally action reaction forces do not move things. In this problem they move. I wish to discuss in what way these so called constrain forces contributeto motion or kinetic energy L. Do they do wirk. Yes then why no then why not?
  6. Let'sthink

    Understanding Complex Number Equations: An Exploration

    No. Just different elimination process.
  7. Let'sthink

    Understanding Complex Number Equations: An Exploration

    given x+iy = a/(b+cos φ +i sinφ)----- 2 Multiply 1 and 2 x^2 +y^2 = [(a^2 )/{(1+b^2+2b*cosφ)}]-------- 3 Add 1 and 2 2x = [{2a(b+cosφ)}/(1+b^2+2b*cosφ)] or x = [{a(b+cosφ)}/(1+b^2+2b*cosφ)] ------------- 4 Rewriting 3 gives us (x² +y²) (b²-1 +1 +1 +2bcosφ) = a² or {(b²-1) +2*(1 +bcosφ)] =...
  8. Let'sthink

    I Is this proof regarding massless strings correct?

    What do you say about T in the string moving with common acceleration, when string is not mass less? Will it be uniform? Contemplate on F = ma and tell me Sir.
  9. Let'sthink

    I Is this proof regarding massless strings correct?

    I am talking of the case when common acceleration of the two masses and the string is non zero, Sir.
  10. Let'sthink

    I Is this proof regarding massless strings correct?

    Newton's law tells us that the tension in the string that pulls some object with with constant acceleration, say a, toward right cannot be uniform as some force has to be there which generates the acceleration of a tiny piece of string which is pulled by the right part, say with "Tr" right ward...
  11. Let'sthink

    Thermodynamics, find the work done from the graph

    Write down your answer completely, consider the value of P at A and B, correctly. Neither at A nor at B it is 1000 Pa. Think carefully they need to be different.
  12. Let'sthink

    Finding the Velocity of a Mass in Circular Motion

    Think, is the motion of the bob with a constant centripetal force or variable centripetal force. In all situations energy has to be conserved so why not try it out?
  13. Let'sthink

    Why this special case occurs in an exchange of heat

    I think some information, some data, is missing here. How can the temperature of oil and water both increase. Is there a heating coil in oil tube? I think it must be there. The higher temperature rise of oil is there because specific heat of oil is smaller and also oil is moving at a slower...
  14. Let'sthink

    I The Role of Doping and Electric Fields in P-N Junction Formation?

    I have corrected some typographical mistake in the copied portion above.
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