Question

Find the speed of the the minute hand of a clock which is 7 cm long.

Answer 1

Explanation:

We know that

Time = 60 sec ,

Distance = circumference = 2πr

              = 2 x 3.14 x 7cm

               = 43.96 cm

Speed = distance / time

          = 43.96 / 60

            = 73.2 x 10 ⁻⁵ m/s

                             Hope you understand

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