Problem # p003

Force - Linear Acceleration
Two blocks, A and B, are connected by a cable which runs over the shown pulley in a frictionless manner. The masses of cable and pulley can be neglected.


  1. Sketch the complete F.B.D. of block A

  2. Sketch the complete F.B.D. of block B

  3. Circle the item(s) you think are correct :
    1. The acceleration of block A and B have the same absolute value
    2. The force the cable exterts on block A and B have the same absolute value

  4. Derive the equation for the acceleration of block B in terms of
    μ = coefficient of friction between block A and supporting surface.
    mA = mass of block A
    mB = mass of block B
    g = gravitational acceleration