2007-06-24 14:19:08 · 4 answers · asked by Sean B 1 in Science & Mathematics ➔ Mathematics
Omega = 2 pi radians (one turn) / 12 hours, obviously
Omega is the speed of rotation (angle/time)
The true speed v is given by :
v = omega * r (17 cm)
This gives :
v = 2.47 10^-5 meter / second
Or, roughly :
v = 25 micrometers / second
Hope it helps!
2007-06-24 14:23:38 · answer #1 · answered by Kilohn 3 · 2⤊ 1⤋
The tip of the hour hand would trace a circle with circumference 2*pi*r over the course of one hour.
v = 2*pi*17cm/1 hour
v = 106.76 cm/hour
to figure per minute, divide by 60
106.76 cm/60 min = 1.78 cm/min
2007-06-24 21:24:31 · answer #2 · answered by ecolink 7 · 0⤊ 1⤋
Angular velocity , w , = 2Ï / 60 radians / min
Linear velocity = wr
= (2Ï/60) x 17 cm / min
= 1.78 cm / min
2007-06-28 17:26:49 · answer #3 · answered by Como 7 · 0⤊ 0⤋
((pi*17*2)/60)/1 second
oh thats for the seconds hand
2007-06-24 21:24:37 · answer #4 · answered by thephoneguy1234 4 · 0⤊ 2⤋