Question

The tip of a clock takes 60 seconds to move once on the circular dial of the clock.If the radius of the clock is 10·5cm,Calculate the speed of the tip of the seconds hand clock (Given pi =22 upon 7)

Answer 1

Given, radius of the clock =10.5cm
Total distance travelled=2×22/7×10.6
= 2× 22× 1.5
= 66cm.
Total time take= 60 sec
Therefore, speed = distance / time
= 66/60
= 1.1 cm/sec