Recent content by Jacobs

  1. J

    Finding the tension of a rope given the mass of a pulley

    But r is radius of pulley
  2. J

    Finding the tension of a rope given the mass of a pulley

    But why 1/2mr^2 instead of mr^2?Yes it is cylinder but particle moves as x and y-axis not z
  3. J

    Finding the tension of a rope given the mass of a pulley

    Is that right?
  4. J

    Finding the tension of a rope given the mass of a pulley

    Homework Statement mass of pulley is 8 kg Homework Equations m1a=T m2g-T=m2a The Attempt at a Solution I solved question with neglecting mass of pulley but should I?
  5. J

    How to find speed with Faraday's law

    Answer of B is 2?
  6. J

    How to find speed with Faraday's law

    so formula is BdeltaA/delta(t) but still have no idea about how find find change in the area
  7. J

    How to find speed with Faraday's law

    1st one
  8. J

    How to find speed with Faraday's law

    Homework Statement A metal rod can slide on a rail without any friction in the presence of uniform magnetic field of B=1T which is perpendicular to the plane of the paper.The distance between the tracks is d=0.1m and the resistance given is R=0.1 ohm.The resistance of the rail is negligible and...