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urp:physrot [2021-11-05]
nerf_herder
urp:physrot [2021-11-08]
nerf_herder
Line 1: Line 1:
-=====Rotation ​and Oscillation===== +=====Rotation=====
- +
- +
-====Spring and Lever==== +
-**Hooke'​s law** for springs: F=-kx, k=spring constant, x = displacement +
- +
-**Fulcrum**:​ t = r * f  (torque = radius * force) +
-just add the torques for multiple objects on one side of a fulcrum +
- +
-====SHM - Simple Harmonic Motion==== +
-F = ma, ∴ ma = -kx +
- +
-angular frequency ω = √(k/m) +
- +
-period of oscillation T = 2π √(m/​k) ​ (horizontal or vertical springs) +
- +
-In a vertical spring, the weight Mg of the body produces an initial elongation to equilibrium,​ such that Mg − kyₒ = 0. +
- +
-If y is the displacement from this equilibrium position the total restoring force will be Mg − k(yₒ + y) = −ky+
  
  
  
 Back to [[Physics]] page or [[00_start|Start]] page. Back to [[Physics]] page or [[00_start|Start]] page.
urp/physrot.txt · Last modified: 2021-11-08 by nerf_herder