• Conservation of energy
  • Initial energy == ending energy
  • Pendulum can't go higher than before bc of conservation of energy
  • Like [[Momentum]]
• Force applied is work
• Work = Force x Distance
• 50N in 2m is 100J of work
• Work is not including time
• Power takes into account time
• $$Power = \frac{work}{time}$$
• Work changes position or speed or both
• Work turns into mechanical force
• Work Energy Theorum
  • Amount of work is the mech energy smth has
  • 100J of work == 100J of mechanical energy
• Mechanical energy
  • 2 for now
  • Potential
    • off the ground has potential energy
    • Has the potential to exert energy
    • PE
    • $$PE = mass * gravity * distance$$
    1. $$Work = F * Dist$$
    2. $$Work = Weight * Distance$$
    3. $$Work = Mass * Gravity * Distance$$
    • Work turns into potential energy, so you can replace that
    • Heavier == > PE
  • Kinetic
    • When you push an object it is moving
    • Thats kinetic energy
    • Mass and speed matter when energy is there
    • so the equation is
    • $$KE = \frac{1}{2}mass * speed^2$$
  • Total Mechanical Energy
    • You need to calculate both KE and PE and add them together