Find the speed of movement of the end of the minute hand relative to the dial if its length is 10 cm.
| March 3, 2021 | education
To find the speed of the end of the indicated minute hand, use the formula: V = 2 * Π * R / T = 2 * Π * L * n / t.
Variables: L is the length of the indicated minute hand (L = 10 cm = 0.1 m); n is the number of revolutions (n = 1 rev.); t – duration of rotation of the arrow (t = 1 h = 3600 s).
Calculation: V = 2 * Π * L * n / t = 2 * 3.14 * 0.1 * 1/3600 = 1.744 * 10-4 m / s.
Answer: The end of the indicated minute hand moves at a speed of 1.744 * 10-4 m / s.
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