Recent content by gunparashar

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    Graduate Pure rolling of sphere having non uniform mass density ?

    in case of rolling without slipping of a solid sphere having uniform mass density the condition is Vcm (velocity of center of mass ) = Rω or [a][/cm] = Rα ,which comes from the fact that if an object that rolls without slipping the geometric center of the body travels 1 circumference along...
    • gunparashar
    • Thread
    • Center of mass Density Mass Newton mechanics Non uniform Pure Rigid body dynamics Rolling Rolling motion Rolling without slipping Sphere Uniform
    • Replies: 2
    • Forum: Mechanics
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    Undergrad Center of Mass of Quarter-Circle Wire

    same confusion here in order to find the torque because of the weight we should consider weight to be acting about center of mass ( i.e center of gravity ) which is at (2r/pi , 2r/pi) but Kleppner has taken weight to be acting about the middle point on the rod which is on rod itself.
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    Undergrad Simple harmonic motion and circular motion

    why simple harmonic motion is projected as or compared with uniform circular motion ?
    • gunparashar
    • Thread
    • Circular Circular motion Harmonic Harmonic motion Motion Simple harmonic motion
    • Replies: 3
    • Forum: Mechanics
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    Undergrad Simple harmonic motion and positive constant w^2?

    in defining the Equation of simple harmonic motion taking origin as fixed point and the line of motion as x axis. a(acceleration) = - w^2 * x. where w^2 is positive constant. what is the reason behind taking square of w as constant not just w?
    • gunparashar
    • Thread
    • Constant Harmonic Harmonic motion Motion Positive Simple harmonic motion
    • Replies: 2
    • Forum: Mechanics
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    Undergrad What is the normal acceleration of body in non uniform circular motion

    when the body rotates with uniform motion then the normal acceleration is V^2/r. but what is the normal acceleration when the motion is in non uniform circular motion let's say when body has uniform tangential acceleration.
    • gunparashar
    • Thread
    • Acceleration Body Circular Circular motion Motion Non uniform Normal Uniform Uniform circular motion
    • Replies: 1
    • Forum: Mechanics
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    Reversing the Role of a Great Engine: Refrigerator or Heat Pump?

    Reverse of a great engine is refrigerator or heat pump?
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    Undergrad Triple Point Water: Why Used for SI Thermodynamic Temp

    why triple point of water is used to define SI base unit of thermodynamic temperature even though for triple point we need to define both temperature (. 01) and pressure(partial pressure = 611.73 pa). this thing we can do with ice point and boiling point which is same when temperature and...