Question

a pencil is tied to one end of a string of length 5 cm and the other is fixed to a nail. If the time taken to draw
a half circle and a full circle with the pencil is 2 and 4 seconds respectively, find the velocity
to 1. to draw half circle. 2. to draw full circle.​

Answer 1

Answer:

speed of pencil =

$\frac{22}{7} \times 5 = 2 = 7.86cm \sec$

Answer 2

Answer:

Speed of pencil =(22/7 X 5)/2=7.86cm/sec