Recent content by crutts

  1. C

    Mechanical Principles help please.

    Ok cheers.
  2. C

    Mechanical Principles help please.

    Should I use diameter or circumfrence? As i seem to remember circumfrence being mentioned in class.
  3. C

    Mechanical Principles help please.

    I take it d stands for diameter? Should it be this or should it be circumfrence? Joe
  4. C

    Mechanical Principles help please.

    1. The top pulleys of a Weston differential pulley block have diameters of 210mm and 190mm. Determine the effort required to raise a load of 150kg if the efficency of the system is 35%. What is the work done in overcoming friction when the load is raised through a height of 2.5m? I...