If L=mglsin(theta) ( angular momentum) why N= - mglsin(theta) ? I dont understand why fundamental equation of motion takes form -mglsin Axis210297 MMs-7ed-english.pdf - Adobe Acrobat Pro DCОкно Справкаkupdf.net_analytical... x↓339 (350 3 574)re 8.4.1 The physical pendulum.0 +200%Denoting the angle between the line OCM and the vertical line OA by 0, the momentof the gravitational force (acting at CM) about the axis of rotation is of magnitudemglImgl sinThe fundamental equation of motion N = I then takes the form --mgl sin 0=16Ä +↓sin = 0+mgl 0 = 0Equation 8.4.1 is identical in form to the equation of motion of a simple pendulum.For small oscillations, as in the case of the simple pendulum, we can replace sin by 0:(8.4.1)(8.4.2)

Simple harmonic motion is oscillations where restoring force acts towards mean position. We find…

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