Question

The length of a second’s hand of a clock is 4cm. The speed of tip of the second’s hand is

Answer 1

Answer:

tip of second hand of a clock forms a circle in a minute.

so perimeter of circle formed = 2×(22/7)×4 cm= 176/7 cm

time taken = 60 seconds

speed of tip of second hand= distance(perimeter) ÷ time taken

= 176/7 ÷60 =176/420 = 0.419 cm/ sec

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