Technical Drawing - Exam Papers - Ordinary - 2000 - Paper 1

Question 4

Fig. 4 shows two circles, A and B, touching the line CD. Also shown are two points P and Q on the circumferences of the circles. Circle A rolls clockwise and circle B rolls anti-clockwise along the line CD.

Draw the paths of points P and Q as the circles roll along CD until the paths of P and Q intersect.