2007-09-10 07:10:18 · 9 answers · asked by umashankar 1 in Science & Mathematics ➔ Mathematics
2(pi)cm/min
or
6.283cm/s
or
0.105 cm/s
or
0.00105 m/s
or
1.05 x 10^(-3) m/s
2007-09-10 07:14:43 · answer #1 · answered by most important person you know 3 · 0⤊ 0⤋
"cm long"? I think you're missing a number.
But in general, a seconds hand does one revolution per minute. That means the tip of the hand travels sweeps one whole circumference of a circle in one minute. So use the length of the hand to find the circumference of the circle it sweeps, and that gives you the amount of centimeters per minute.
2007-09-10 07:13:44 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Given:
Radius (r) = 1cm (second's hand length)
Circumference = 2*3.1416*r =6.2832cm
The speed at the tip of second's hand is;
Speed = Distance /Time = 6.2832cm/60 seconds
Speed = 0.1047 cm/s
2007-09-10 07:23:40 · answer #3 · answered by Quicksand 2 · 1⤊ 0⤋
The total distance travelled by tip of second hand the circumference of the clock. in 60 seconds = 2pi × r, where r is the length of second hand in cm.
speed = 2 × 3.14 × r = 6.28 × r cm/sec.
Generally speed is given as km/hr.
speed = 2 × 3.14 × r = 6.28 × r cm/sec.
= 6.28 × r × 3600 cm/ hr = 22608 × r cm/hr
= 22608 × r / 100 meter/hr = 226.08 meter/hr
= 226.08/1000 km/hr = 0.22608 km/hr.
2007-09-13 05:05:20 · answer #4 · answered by Pranil 7 · 1⤊ 0⤋
X cm long = radius of the circle it traces.
the circumference of the circle will be 2 pi X
the tiop will travel 6.28X cm per 60 seconds.
6.28X cm/min
0.10X cm/sec
2007-09-10 07:18:14 · answer #5 · answered by skipper 7 · 0⤊ 0⤋
Speed = distance/ time
distance = 2pi x r (for a circle)
speed = 2 x22/7 x r /60 cms/s
substitute r value you well get answer
2016-06-04 18:19:39 · answer #6 · answered by msbabu 1 · 0⤊ 0⤋
Hi. If it sweeps (rather than 'ticks') just use Pi D to find the circumference. It will travel this distance in 1 minute.
2007-09-10 07:14:25 · answer #7 · answered by Cirric 7 · 0⤊ 0⤋
Well i think it'd have to be 1 second per second...since it has to point to each second as it passes...
2007-09-10 07:14:45 · answer #8 · answered by Indeedy 3 · 0⤊ 0⤋
I am not here to do your homework.
2007-09-10 07:14:17 · answer #9 · answered by Anonymous · 2⤊ 1⤋