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FBD Builder

Draw every force on the chosen body. No more, no less. Fake forces and missing ones get caught.

Physics · Class 11 · Free-body diagrams · 9 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Book on a table: How to draw a free-body diagram
  2. Resting on a rough slope: Normal and friction on a slope
  3. Thrown up: Motion does not need a force
  4. Pulled at an angle: Ropes pull along themselves, and friction opposes sliding
  5. Top block, dragged along: Friction can drive a body forward
  6. Bottom block, same push: What the body on top does
  7. Over the pulley: A pulley only turns the string
  8. The whole train: Choose the system, and leave out internal forces
  9. Angled push: how much N?: The normal force is not always mg