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Sand on the Belt

Sand pours onto a moving belt. How hard must the motor push to keep the belt at speed?

Physics · Class 11 · Force from a stream of mass · 9 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Keep it rolling: Force = rate of change of momentum
  2. Where does the power go?: Power into a stream of sand
  3. Jet on a wall: A jet is a stream of momentum
  4. Bounce it back: When the water comes back
  5. Just lift off: Thrust from throwing mass away
  6. Rain in the cart: No sideways force, so sideways momentum stays
  7. Burn to the end: Rocket speed when the fuel runs out
  8. Chain on the scale: A falling chain on a scale
  9. The leaky cart: Mass that leaves at your own speed