6 Further mechanics

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    Created by
    Rafael Lam

    Cards (8)

    • what is conserved in a Elastic and Inelastic collision

      Momentum is conserved
    • Elastic collisions
      Kinetic energy is conserved
      Collide and move away in opposite directions after collision
      Momentum is conserved
    • Inelastic collisions
      Kinetic energy is not conserved
      Collide and stick together after collision
      Momentum is conserved
    • Impulse
      Δp = F.Δt

      I = Δp = m(v-u)
    • Angular velocity
      Rate of change of angular displacement

      ω = 2π/T

      v = ωr
    • Centripetal acceleration

      Constant angular velocity and angular speed
      a = v^2/r

      a = Δv / t

      Δ v = ωt x v
      a = ωt x v / t
      a = ω x v
      v = ωr
      a = v / r x v
      a = v^2 / r
    • Centripetal force 

      F = mv^2 / r
    • Explain how banking allows the aeroplane to fly in a horizontal circular path
      Vertical component = weight of plane
      • Vertical component of resultant force is 0 so plane remains flying horizontally
      • Horizontal component of lift force acts as centripetal force
      • So it follows a circular path