Calculate the speed of the tip of minute’s hand of a watch of length 5 cm.
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Answer:
The end of the arrow of the hand rotates in a circle of radius 5 cm. It moves the circumference = 2 π 5 cm in one rotation, that is 60 minutes = 3600 seconds.
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Answer:
The minute hand traces its path around the clock once in an hour. The distance travelled by the tip of the hand in this time is 2 x pi x 5cm.
The speed is then 10pi cm/hour, which is 8.73 x 10-5 ms-1.
Explanation:
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