Asked by MrMrMangohead
Q17. How long does it take the minute arm on a wall clock or wristwatch to make one revolution? Measure the length of a second arm on a wall clock or wrist watch and calculate the speed of the tip of the minute arm.
Answers
Answered by
oobleck
it takes one hour
If the minute hand has length r cm, then the tip moves at a speed of
2πr cm/hr
If the minute hand has length r cm, then the tip moves at a speed of
2πr cm/hr
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