Elasticity
December 8, 2016(1) Stress = $F/A$ (2) i. Tensile strain: $E/A$ = ${Mg}/{πr^2}$ ii. Volume = ${A dP}/{A}$ = $dP$ iii. Shearing:... View Article
Categories for 12th Physics
Oscillations
December 8, 2016(1) F = -kx (2) $k = m w^2$ (3) ${d^2 x}/{dt^2} + x w^2 = 0$ (4) $PE =... View Article
Rotational Motion
December 8, 2016(1) $I = Σ m_i r_i_^2$ (system of particles) $I = ∫r^2 dm$ (rigid body) (2) $I = M k^2$... View Article
Gravitation
December 8, 2016(1) $F = G {m_1 m_2}/{r^2}$ G = 6.673 x $10^{-11}$ $m^3$/$kg s^2$ (2) $g = {GM}/{R^2}$ i.e. $weight =... View Article
Circular Motion
December 8, 2016(1) S = rθ (2) $w = θ/t$ (3) $α_{avg.} = {w_2 – w_1}/{t}$ (4) $\ov v$ = $\ov w$... View Article