hi people, I'm quite lost about this question, could u offer me some help pls? thanks ^-^
so the question is:
a compact disc spins at a rate of 200 to 500 revolutions per minute. what are the equivalent rates measured in radians per second?
thanks for your help and merry christmas people ^-^
a maths question please?
2011-12-22 10:48 am
回答 (8)
2011-12-22 11:02 am
✔ 最佳答案
200 revs/min is 200/60 revs/second => 10/3 revs/sec500 revs/min is 500/60 revs/second => 25/3 revs/sec
1 revolution is 2π radians
so, 20π/3 rads/sec and 50π/3 rads/sec
:)>
2011-12-22 7:52 pm
Hai,
1 rps = 2PI rad/sec
60rpm = 2PI rad/sec
ANSWER FOR YOUR QUESTIONS,
1. 200 rpm = 200 x 2PI / 60
= 20.94 rad/sec
2. 500 rpm = 500 x 2PI / 60
= 52.33 red/sec.
please check it.
thanks and advance merry christmas.
by
v.vijayasundar
1 rps = 2PI rad/sec
60rpm = 2PI rad/sec
ANSWER FOR YOUR QUESTIONS,
1. 200 rpm = 200 x 2PI / 60
= 20.94 rad/sec
2. 500 rpm = 500 x 2PI / 60
= 52.33 red/sec.
please check it.
thanks and advance merry christmas.
by
v.vijayasundar
2011-12-22 7:07 pm
spins at a rate = 200 - to - 500 revolutions per minute
spins at a rate = 200/60 - to - 500/60 r.p.sec
spins at a rate = 200*2pi/60 - to - 500*2pi/60 radian/sec
spins at a rate = 20.943 - to - 52.36 radians/sec >=====< ANSWER
spins at a rate = 200/60 - to - 500/60 r.p.sec
spins at a rate = 200*2pi/60 - to - 500*2pi/60 radian/sec
spins at a rate = 20.943 - to - 52.36 radians/sec >=====< ANSWER
2011-12-22 6:56 pm
let x be the rate of the spin of the CD
200x2pi/60 = 20pi/3
500x2pi/60 = 50pi/3
20pi/3 ⤠x ⤠50pi/3
200x2pi/60 = 20pi/3
500x2pi/60 = 50pi/3
20pi/3 ⤠x ⤠50pi/3
2011-12-22 6:55 pm
1 revolution = 360 degrees = 2*pi radians
200 rev = 200 * 2 * pi radians
500 revolutions = 500 * 2 * pi radians
1 min = 60 sec
angular velocity = angle / time rad/sex
hence, the angular velocity is between : 400pi / 60 rad/sec and (1000 * pi ) / 60 rad/sec
or: 20.943951 rad/sec and 52.3598776 rad/sec
200 rev = 200 * 2 * pi radians
500 revolutions = 500 * 2 * pi radians
1 min = 60 sec
angular velocity = angle / time rad/sex
hence, the angular velocity is between : 400pi / 60 rad/sec and (1000 * pi ) / 60 rad/sec
or: 20.943951 rad/sec and 52.3598776 rad/sec
2011-12-22 6:54 pm
a compact disc spins at a rate of
200 rpm = 200*2 pi / 60 radians per second = (20/3) pi radians per decond ANSWER
to 500 rpm = (5/2)(20/3) pi rad/sec = 50/3 pi radians per second ANSWER
200 rpm = 200*2 pi / 60 radians per second = (20/3) pi radians per decond ANSWER
to 500 rpm = (5/2)(20/3) pi rad/sec = 50/3 pi radians per second ANSWER
2011-12-22 6:53 pm
well 1 revolutin = 2Ï
and as we know 1 min = 60 sec
so if speed is 200 rev/min
then it becomes 200* 2Ï / 1*60 = 6.66Ï rad/sec
if it is 400 revolution then answers will be 13.32Ï rad/sec
and as we know 1 min = 60 sec
so if speed is 200 rev/min
then it becomes 200* 2Ï / 1*60 = 6.66Ï rad/sec
if it is 400 revolution then answers will be 13.32Ï rad/sec
2011-12-22 6:51 pm
200x2pi/60
&
500x2pi/60
God bless you.
&
500x2pi/60
God bless you.
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