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Lever Arm

Push a spanner at an angle and slide a puck past a pin. Find the torque and the spin.

Physics · Class 11 · Torque and angular momentum · 7 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Turn the nut: Torque: τ = F r
  2. A slanted push: Only the part at right angles turns it
  3. Best pull: Most torque: pull at right angles to OP
  4. Spin arrow: ω is a vector along the axle: v = ω × r
  5. Torque in parts: Torque as a vector: τ = r × F
  6. Puck past a pin: L of a moving body: L = m v r⊥
  7. Throw from the pin (JEE Adv): Torque changes L: τ = dL/dt