While sitting in physics class one day, you begin to ponder the workings of the
ID: 1565420 • Letter: W
Question
While sitting in physics class one day, you begin to ponder the workings of the analog clock on the classroom wall. You notice as the hands sweep in a continuous motion that there are exactly t = 49 minutes left in class. Randomized Variables t = 45 minutes Through what angle (in radians) will the second hand turn before the end of class? Numeric A numeric value is expected and not an expression. Through what angle (in radians) will the minute hand sweep before the end of class? Numeric A numeric value is expected and not an expression. Through what angle (in radians) will the hour hand sweep before the end of class? Numeric A numeric value is expected and not an expression. Calculate the angular velocity of the minute hand in radians per second. Numeric:A numeric value is expected and not an expression. Calculate the angular velocity of the minute hand in radians per second. Numeric A numeric value is expected and not an expression. Calculate the angular velocity of the hour hand in radians per second. Numeric A numeric value is expected and not an expression. Is the angular acceleration of the second, minute, and hour hands the same? Pick the most accurate response. Yes. The angular acceleration of each hand is zero. No. The second hand has the largest angular acceleration. No. The minute hand has the largest angular acceleration No. The hour hand has the largest angular acceleration. Need to know the length of each hand is to answer. Yes. Each hand has the same non-zero angular acceleration.Explanation / Answer
time, t=49 min
a)
theta=w*t
theta=2pi*t
=2pi*49
=307.87 rad
b)
theta=2pi*t
=2pi*49/60
=5.13 rad
c)
theta=2pi*t
=2pi*49/(12*60)
=0.427 rad
d)
tha angular velocity w=2pi/T
=2*pi/60
=0.105 rad/sec
e)
w=2pi/T
=2pi/(60*60)
=1.74*10^-3 rad/sec
f)
w=2pi/T
=2pi/(12*60*60)
=0.145*10^-3 rad/sec
g)
yes, the angular acceleration of each hand is zero
correct option is (1) ,
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