Question

please help me to solve it
The length of min-hand of a clock is 14cm. Calculate the speed at which the tip of minute-hand moves.

Answer 1

HeRe Is Your Ans ⤵

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Given :-

R = 14 cm

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Tip of minute clock travel's distance = circumference of circle of radius 14 cm in 60 minutes ( 3600 seconds )

$= > speed = \frac{2 \times 3.14 \times 14}{3600} \\ \\ = > speed = \frac{87.92}{3600} \\ \\ = > 0.0244 \: \: \: \frac{cm}{sec}$

$\fbox{ans = 0.0244 \: \: \frac{cm}{sec} }$

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$<marquee > hope it helps u$

Answer 2

Answer:

0.024 cm/s

Explanation:

Minute-hand of a clock describes a circle of radius equal to its length = 14 cm.

Therefore, radius = 14 cm.

∴ Distance = 2πr

                  = 2 * (22/7) * 14

                  = 88 cm

The time it takes to complete one full revolution by seconds hand = 3600 seconds.

Speed = Distance/Time

          = 88/3600

          = 0.024 cm/s

Therefore, Speed is 0.024 cm/second.

Hope it helps!