An open flat belt is to transmit 8 kW. The small pulley has a diameter of 175 mm and rotates at 810 rpm, whilst the large pulley runs at approximately 250 rpm. The centre distance between the pulleys is 800 mm. Assume = 0.35.

2.1 Draw the free-body diagram of the pulley system. (2)

2.2 Calculate the diameter of the large pulley. (4)

2.3 Calculate the maximum tension (T1) and the minimum tension (T2) (11)

2.4 Calculate the length of the belt. (3)