Technical Drawing - Exam Papers - Ordinary - 2006 - Paper 1

Question 4

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Shown are two circles R and S. which are in contact as shown.
Also shown are two points P and Q on the circumference of the circles.
Circle R rolls clockwise along the line BA until P reaches the line BA. Plot the locus of P for this movement.
Circle S rolls anticlockwise along the line BC until Q reaches the line BC. Plot the locus of Q for this movement.
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