UESTION THREE
a) Briefly explain what is meant by moment of a force.
[2 marks]
b) A uniform wheel of centre 0, 600mm diameter and weighing 5kN is being rolled
along a horizontal concrete into a workshop, then jams on a rigid rectangular block of
height 150mm as shown in Fig 02 below.
600
P
1501
Fig 02
Determine the magnitude of the minimum horizontal force P required to pull the
wheel over the block.
16 marks)​