2006-11-18 11:25:01 · 3 answers · asked by MSI 1 in Science & Mathematics ➔ Mathematics
It does 1 revolution per minute
ie ω = 2π radians per minute
Now v = rω
= 10 * 2π in./min.
= 20π in./min.
≈ 62.83 in./min.
Rich Z above did not find the circumference as C = 2πr not πr
2006-11-18 11:34:50 · answer #1 · answered by Wal C 6 · 0⤊ 0⤋
The circumference of the clock face is two*pi*r = 2*pi*10 = 20*pi inches. the second one hand travels by the circumference in 60 seconds. The linear velocity of the end is 20*pi/60 = pi/3 in/sec.
2016-11-29 06:27:24 · answer #2 · answered by ? 4 · 0⤊ 0⤋
That 10 inch long hand traces out a circle 10" in radius. That has a circumference of pi times its radius or 31.4 inches. Since the second hand goes 1 revolution (31.4 inches) in a minute its speed is 31.4" per minute at the tip.
2006-11-18 11:29:46 · answer #3 · answered by Rich Z 7 · 0⤊ 0⤋