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Mathematics 21 Online
OpenStudy (anonymous):

Angular speed of second's hand of watch in rad/sec is???

OpenStudy (anonymous):

@Abhisar

OpenStudy (abhisar):

v=omega*r

OpenStudy (anonymous):

ok

OpenStudy (abhisar):

actually don need to use that formula We simply divide the amount of degrees it covers by the amount of time it takes. Thus, 360 degrees in 60 seconds 6 degrees per second. Now, you may want to know it in radians. To find the angular speed in radians you simply convert degrees to radians. (6 deg) * (pi rad) / (180 deg) to convert 6 degrees into radians = (1/30) * pi radians .0333 * pi radians per second or .1037 rad / sec

OpenStudy (abhisar):

getting it ?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

and in case of minute hand?

OpenStudy (anonymous):

@Abhisar are u there???

OpenStudy (anonymous):

(2 x pi ) / 60 = 0.1047 rad /s

OpenStudy (abhisar):

all clear ?

OpenStudy (anonymous):

and in case of minute hand?

OpenStudy (anonymous):

2*pi/3600 rad/sec? in case of minute's hand

OpenStudy (abhisar):

Minute hand covers 360° in 3600 seconds or one hour, so 0.1° per second

OpenStudy (anonymous):

2*pi/3600 rad/sec right

OpenStudy (abhisar):

(0.1 * pi)/180 rad/sec

OpenStudy (anonymous):

ok got it

OpenStudy (abhisar):

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